Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
van thanh » ban thanh, van tuan
hieu van » hieu va, thien van, lieu va
thanh vi » hanh vi, thanh va, thanh ve
sach ky » sac ky, sach y, sach ty
cao hoi » cau hoi, co hoi, cao hoc
cac dat » cac dan, cai dat, cac dai
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: thuat sach ky nang cao hoi. hieu van ((cac dat) or (can dai)) van thanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky nang cao hoi. hieu van ((cac dat) OR (can dai)) van thanh vi cua vat.
• Adding a wildcard symbol may retrieve word variants: thuat sach ky nang cao hoi. hieu van ((cac dat) or (can dai)) van thanh vi cua vat*.