Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
hang tai » hang va, dung tai
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
sach ky » sac ky, sach y, sach ty
cua te » cua tu
luc va » duc va, tuc va, loc va
xuc va » duc va, tuc va, xac va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ky nang xa hoi. hieu van cam ((xuc va) OR (luc va)) ((thanh hai) or (hang tai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang xa hoi. hieu van cam ((xuc va) OR (luc va)) ((thanh hai) OR (hang tai)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky nang xa hoi. hieu van cam ((xuc va) OR (luc va)) ((thanh hai) or (hang tai)) cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang xa hoi. hieu van cam ((xuc va) OR (luc va)) ((thanh hai) or (hang tai)) cua te*.