Perhaps you should try some spelling variations:
thanh de » hanh de, thanh ve, thanh do
thanh di » thanh doi, thanh do, thanh dinh
te sach » toc sach
cao luc » bao luc, cao duc, cao suc
nang xa » nang x, lang xa, nang ma
hieu va » lieu va
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2
luc va » duc va, tuc va, loc va
v nang » va nang, vu nang, van nang

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