Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cua viet » ca viet, hoa viet, cua vat
va thanh » gia thanh, va tinh, le thanh
hieu van » hieu va, thien van, lieu va
danh ly » doanh ly, dinh ly, dang ly
van cam » van nam, van lam, van cau
nang ma » tang ma, sang ma, mang may
so danh » do danh, so sanh, so dan
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so danh ly ((nang ma) or (nang cao)) hoi. hieu van cam xuc ((va thanh) or (ban thanh)) vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so danh ly ((nang ma) OR (nang cao)) hoi. hieu van cam xuc ((va thanh) OR (ban thanh)) vi cua viet.
• Adding a wildcard symbol may retrieve word variants: so danh ly ((nang ma) or (nang cao)) hoi. hieu van cam xuc ((va thanh) or (ban thanh)) vi cua viet*.