Perhaps you should try some spelling variations:
quan thanh » ban thanh, van thanh
thai tren » thai tran, thi tren, thai trang
thanh hai » thanh phan, thanh hoa, thanh san
hoc quan » hoc dan, tac quan, hoc phan
chau tre » chay tren, chau tho, cho tre
van chat » cao chat
van cam » van nam, van lam, van cau
tu sach » thu sach, su sach, te sach
y nang » ky nang, ly nang, v nang
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: tu sach y nang x hoi. hieu ((van cam) or (van chat)) hoc quan thanh hai ((chau tre) or (thai tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu ((van cam) OR (van chat)) hoc quan thanh hai ((chau tre) OR (thai tren)).
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu ((van cam) or (van chat)) hoc quan thanh hai ((chau tre) or (thai tren))*.