Perhaps you should try some spelling variations:
thanh le » thinh le, thanh ve, thanh de
te sach » toc sach
luu van » cuu van, luan van, luu hanh
luc van » luoc van, duc van, luc va
cua tre » cua te, cuu tre, cua triet
va nang » van nang, da nang, cam nang
v nang » vu nang, van nang, voi nang
le cua » ly cua
va cau » van cau, va cac, va dau

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 ((v nang) or (va nang)) xa hoi. lieu va cau ((luc van) OR (luu van)) thanh le cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((v nang) OR (va nang)) xa hoi. lieu va cau ((luc van) OR (luu van)) thanh le cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((v nang) or (va nang)) xa hoi. lieu va cau ((luc van) OR (luu van)) thanh le cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((v nang) or (va nang)) xa hoi. lieu va cau ((luc van) OR (luu van)) thanh le cua tre*.