Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh ke » thanh ket, thanh ve, thanh de
cau tren » cu tren, dau tren, ca tren
te sach » toc sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
hieu ve » hieu va, hieu van
cau luu » cau luc
luu van » cuu van, luan van, luu hanh
cua tre » cua te, cuu tre, cua triet
ve cau » ke cau, va cau, ve 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 ly nang x hoi. hieu ve cau luu van thanh ke ((cua tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang x hoi. hieu ve cau luu van thanh ke ((cua tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: te sach ly nang x hoi. hieu ve cau luu van thanh ke ((cua tre) or (cau tren))*.