Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
cau tren » cu tren, dau tren, ca tren
va thanh » gia thanh, ban thanh, va tinh
cam truc » cau truc, nam truc, lam truoc
truc va » thuc va, thuc vat, trung va
so sach » so sanh, bo sach, co sach
cua tre » cua te, cuu tre, cua triet
te sach » toc sach
nang o » nang co, nang ho, nang ro
va cam » va cham, va cac, va cao
o hoi » co hoi, o hoc, o hai

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 (so sach)) ky nang o hoi. lieu va cam truc va thanh van ((cua tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (so sach)) ky nang o hoi. lieu va cam truc va thanh van ((cua tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (so sach)) ky nang o hoi. lieu va cam truc va thanh van ((cua tre) or (cau tren))*.