Perhaps you should try some spelling variations:
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu va » hieu qua
truc va » thuc va, thuc vat, trung va
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
xuc va » duc va, tuc va, luc va
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 xa hoi. ((hieu va) or (lieu va)) cam ((xuc va) or (truc va)) hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang xa hoi. ((hieu va) OR (lieu va)) cam ((xuc va) OR (truc va)) hanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach v nang xa hoi. ((hieu va) or (lieu va)) cam ((xuc va) or (truc va)) hanh di cua tre*.