Perhaps you should try some spelling variations:
hai luom » hai luong, hai muoi, hai huoc
dua tren » dung tren
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
luom va » luoc va, luong va, luoc van
cuu tre » cua tre, cau tren, cau treo
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
va hai » van hai, va chai, va khai
bach y » sach y

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu bach y ((nang xa) or (nang ma)) hoi. lieu va hai luom va danh vi ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu bach y ((nang xa) OR (nang ma)) hoi. lieu va hai luom va danh vi ((dua tren) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: vu bach y ((nang xa) or (nang ma)) hoi. lieu va hai luom va danh vi ((dua tren) or (cuu tre))*.