Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
nang xa » nang x, lang xa, nang ma
hieu ha » hieu hoa, hieu va, hieu ca
nam tuc » nam thuc, nam truc, nam tu
han tri » van tri, thanh tri, chan troi
han tai » hang tai, nhan tai, van tai
tuc va » thuc va, truc va, tuc xa
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc sach) or (dac sac)) ky nang xa hoi. hieu ha nam tuc va ((han tri) OR (han tai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (dac sac)) ky nang xa hoi. hieu ha nam tuc va ((han tri) OR (han tai)) cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc sach) or (dac sac)) ky nang xa hoi. hieu ha nam tuc va ((han tri) OR (han tai)) cua te*".