Perhaps you should try some spelling variations:
tru nang » tra nang, tri nang, truc nano
tu cach » tu cac
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
dong va » dung va, dong ha, luong va
duc van » duc va, duc tan, duc manh
va cua » va chua, via cua, ca cua
ve cao » ve bao, ve cac, ve co
va cao » va cac, va co, va dao
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (su sach)) tru nang xa hoi. hieu ((ve cao) or (va cao)) duc van dong va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su sach)) tru nang xa hoi. hieu ((ve cao) OR (va cao)) duc van dong va cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (su sach)) tru nang xa hoi. hieu ((ve cao) or (va cao)) duc van dong va cua te*.