Perhaps you should try some spelling variations:
dau tieng » dau tien, cau tieng, day tieng
chat tuc » chat xuc, luat tuc, chat cua
cau tren » cu tren, dau tren, ca tren
chat huu » pham huu
thu sach » tu sach, thuat sach, thuoc sach
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
hanh ke » hanh kem, thanh ke, hanh ky
nang co » nang cao, nang doc, nang noi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang co hoc. hieu ve ((chat tuc) or (chat huu)) va hanh ke ((cau tren) or (dau tieng))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang co hoc. hieu ve ((chat tuc) OR (chat huu)) va hanh ke ((cau tren) OR (dau tieng)).
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang co hoc. hieu ve ((chat tuc) or (chat huu)) va hanh ke ((cau tren) or (dau tieng))*.