Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
mai hoi » mai khoi, dai hoi, lai hoi
van cam » van nam, van lam, van cau
cam tuc » cam xuc, cam tu, nam thuc
va hanh » van hanh, va thanh, va danh
hanh de » hanh ve, hanh kem
tuc va » thuc va, truc va, tuc xa
de cua » le cua, te cua, dieu 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 cac) or (thu sach)) ky nang ((mai hoi) or (xa hoi)). hieu van cam tuc va hanh de cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cac) OR (thu sach)) ky nang ((mai hoi) OR (xa hoi)). hieu van cam tuc va hanh de cua vat.
• Adding a wildcard symbol may retrieve word variants: ((tu cac) or (thu sach)) ky nang ((mai hoi) or (xa hoi)). hieu van cam tuc va hanh de cua vat*.