Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
nam thuc » nam thuoc, am thuc, nam thu
kham tuc » nham thuc, pham thuc, kham cuoc
sach dao » lanh dao
va hanh » van hanh, va thanh, va danh
hieu vu » hieu va, hieu ve, hieu su
nang xa » nang x, lang xa, nang ma
sach xa » sach nha, sach bai
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: tu ((sach dao) or (sach xa)) nang xa hoi. hieu vu ((kham tuc) or (nam thuc)) va hanh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach dao) OR (sach xa)) nang xa hoi. hieu vu ((kham tuc) OR (nam thuc)) va hanh vi cua viet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach dao) or (sach xa)) nang xa hoi. hieu vu ((kham tuc) or (nam thuc)) va hanh vi cua viet*.