Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
va thanh » gia thanh, va tinh, le thanh
cac tren » ca tren, cau tren, rac tren
te sach » toc sach
thi van » thi lan, thi hanh, thi nang
van cam » van nam, van lam, van cau
cam luc » cam xuc, cau luc
vai cac » va cac, tai cac, voi cac
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (thu hoach)) ky nang x hoi. thi van cam luc ((va thanh) OR (ban thanh)) vai cac tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thu hoach)) ky nang x hoi. thi van cam luc ((va thanh) OR (ban thanh)) vai cac tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thu hoach)) ky nang x hoi. thi van cam luc ((va thanh) OR (ban thanh)) vai cac tren*".