Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
hieu van » hieu va, thien van, lieu va
cau treo » cau theo, cau tren, cau triet
te sach » toc sach
sach ky » sac ky, sach y, sach ty
xay hoi » xa hoi, tay hoi, cay phoi
ky van » ly van, ty van, ky va
soc va » loc va, doc va, goc va
vi cau » va cau, ve cau, di cau

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 van xay hoi. hieu van thanh ((soc va) or (hoc va)) hanh vi cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky van xay hoi. hieu van thanh ((soc va) OR (hoc va)) hanh vi cau treo.
• Adding a wildcard symbol may retrieve word variants: te sach ky van xay hoi. hieu van thanh ((soc va) or (hoc va)) hanh vi cau treo*.