Perhaps you should try some spelling variations:
xa huong » xa phuong, xa muong, ga huong
va huong » va thuong, va phuong, va tuong
hieu van » hieu va, thien van, lieu va
so sach » so sanh, bo sach, co sach
doi cuu » doi cua, doi cuoc
cam tuc » cam xuc, cam tu, nam thuc
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren, cau treo

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

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