Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
cau tren » cu tren, dau tren, ca tren
te sach » toc sach
nam luc » nhan luc, nam thuc, nam duoc
van cau » van dau, van hau, van chat
x hoi » xa hoi, o hoi, x ho

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thu hoach)) ky nang x hoi. hieu van ((nam luc) OR (nang luc)) va thanh van cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thu hoach)) ky nang x hoi. hieu van ((nam luc) OR (nang luc)) va thanh van cau tren~".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thu hoach)) ky nang x hoi. hieu van ((nam luc) OR (nang luc)) va thanh van cau tren*.