Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va
xa dung » xay dung, xa dong, va dung
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
xuc xa » tuc xa, buc xa

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

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