Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va
cuu tre » cua tre, cau tren, cau treo
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » duc va, tuc va, luc va
vi cuu » vi luu, vinh cuu

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 ma hoi. ((hieu ve) or (hieu van)) cam ((xuc va) or (tuc xa)) hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoi. ((hieu ve) OR (hieu van)) cam ((xuc va) OR (tuc xa)) hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. ((hieu ve) or (hieu van)) cam ((xuc va) or (tuc xa)) hanh vi cuu tre*.