Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
te sach » toc sach
nang xa » nang x, lang xa, nang ma
nam xuc » nam xua, nam thuc, nam duoc
va dinh » van dinh, va kinh, va tinh
dinh va » dinh van, dinh ve, tinh va
cau tre » cau tren, cau treo, cau tra
te sac » te cac, te san
va cau » van cau, va cac, va dau

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

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