One to five search terms, comma-separated or repeated when a term contains a comma. A topic is `id:` plus a Knowledge Graph id (`id:/m/02vqfm`), as the suggestions endpoint returns it.

Place: a country code (`US`, `DE`), a subdivision (`US-CA`, `DE-BY`) or an empty string for worldwide. Lowercase input is accepted and normalised to uppercase. Default: `US`.

Category id from the categories endpoint. `0` (the default) means all categories.

Property to search: `web` (default), `images`, `news`, `youtube` or `shopping`.

Interface language, as Google calls `hl` (`en-US`, `de`, `ja`, `ar`). It localises names, dates and type text; it does not translate the queries.

One or two ranges for one term; two must differ. Named `now 1-H`/`4-H`/`1-d`/`7-d`, `today 1-m`/`3-m`/`12-m`/`5-y`, `all`; custom `YYYY-MM-DD YYYY-MM-DD`; named pairs must match in length. Default: `today 12-m`.