Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
van chay » van chat, san chay, toan chay
chay qua » chay dua, cay qua, chay chua
hieu van » hieu va, thien van, lieu va
cuu tre » cau tren, cau treo
qua ban » cua ban, qua quan
tu sach » thu sach, su sach, te sach
cao hoi » cau hoi, co hoi, cao hoc
so sach » so sanh, bo sach, co sach
cua tre » cua te, cua triet, dua tren

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) or (so sach)) ky nang cao hoi. hieu van chay qua ban thanh vai ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (so sach)) ky nang cao hoi. hieu van chay qua ban thanh vai ((cuu tre) OR (cua tre)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (so sach)) ky nang cao hoi. hieu van chay qua ban thanh vai ((cuu tre) or (cua tre))*.