Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cua viet » ca viet, hoa viet, cua vat
dinh ly » sinh ly, dinh le, trinh ly
va hanh » van hanh, va thanh, va danh
so dinh » do dinh, co dinh, so sinh
nang ma » tang ma, sang ma, nang cao
ly nang » ky nang, ly hang, ly vang
ve cam » ve cham, ve cac, va cam
ma hoi » mai hoi, xa hoi, ma hoa
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 dinh ly nang ma hoi. hieu ((ve cam) or (va cac)) xuc ((va hanh) or (ban thanh)) vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so dinh ly nang ma hoi. hieu ((ve cam) OR (va cac)) xuc ((va hanh) OR (ban thanh)) vi cua viet.
• Adding a wildcard symbol may retrieve word variants: so dinh ly nang ma hoi. hieu ((ve cam) or (va cac)) xuc ((va hanh) or (ban thanh)) vi cua viet*.