Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cau treo » cau theo, cau tren, cau triet
thanh vi » hanh vi, thanh va, thanh ve
tru nang » tra nang, tri nang, truc nano
tri bang » tri ban, tri mang, thai bang
hieu van » hieu va, thien van, lieu va
duc van » duc va, duc tan, duc manh
cam duc » cam xuc, cao duc, pham duc
van cam » van nam, van lam, van cau
tu sach » thu sach, su sach, te sach
tu cong » thu cong, te cong, tai cong
vi cau » va cau, ve cau, di cau

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 ((tu cong) or (((tru nang) or (tri bang)))) xa hoi. hieu van cam duc van thanh vi cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((tu cong) OR (((tru nang) OR (tri bang)))) xa hoi. hieu van cam duc van thanh vi cau treo.
• Adding a wildcard symbol may retrieve word variants: tu sach ((tu cong) or (((tru nang) or (tri bang)))) xa hoi. hieu van cam duc van thanh vi cau treo*.