Perhaps you should try some spelling variations:
thanh di » thanh doi, thanh de, thanh do
van nang » van quang, van ban, van dong
va cham » va chat, va tham
te sach » toc sach
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
loc va » hoc va, luc va
tuc va » thuc va, truc va, tuc xa
v nang » va nang, vu nang, voi nang
di cua » dai cua, doi cua, de cua

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