Perhaps you should try some spelling variations:
thanh va » thanh van, hanh va, thanh ha
hieu van » hieu va, thien van, lieu va
van tham » van thanh, van tuan, van chat
thanh vi » hanh vi, thanh ve, nhanh vi
te sach » toc sach
cuu tre » cua tre, cau tren, cau treo
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
loc va » hoc va, luc va
soc va » hoc va, doc va, goc va

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