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 xa » nang x, lang xa, nang ma
nam xuc » cam xuc, nam xua, nam thuc
va kinh » qua kinh
va tinh » may tinh
va chua » vua chua, ca chua, va chu
va cua » via cua, ca cua, ma cua

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