This is the 539th most frequent Estonian word.
mõnda
"Some" or "any" (partitive case of "mõni").
Here, 'mõnda' is used to express an indefinite, unspecified object, implying 'some' in English.
Ma loen mõnda raamatut.
I am reading some book.
Here, 'mõnda' refers to a select, undefined number from a defined group, implying part of a subset.
Mul on vaja mõnda nendest tööriistadest.
I need a few of these tools.
In this sentence, 'mõnda' poses a question about any specific, albeit undefined, interesting place.