Perhaps you should try some spelling variations:
hai luom » hai luong, hai muoi, hai huoc
cuu tre » cau tren, cau treo
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cua triet, dua tren
sang ma » tang ma, nang ma, sang tao
va hanh » van hanh, va thanh, va danh
luom va » luoc va, luong va, luoc van
bach y » sach y
va hai » van hai, va chai, va khai

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 (sang ma)) hoi. lieu va hai luom va hanh vi ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu bach y ((nang xa) OR (sang ma)) hoi. lieu va hai luom va hanh vi ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: vu bach y ((nang xa) or (sang ma)) hoi. lieu va hai luom va hanh vi ((cua tre) or (cuu tre))*.