Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
nam tuc » nam thuc, nam truc, nam tu
dan tai » van tai, dan thi, han tai
va nam » van nam, ha nam, va nay
tuc va » thuc va, truc va, tuc xa
va dan » ca dan, va dao, va dau
cua te » cua tu
cua cu » cua chu, cua cau, cua su

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 lang xa hoi. lieu va nam tuc va dan tai ((cua te) or (cua cu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (dac sac)) ky lang xa hoi. lieu va nam tuc va dan tai ((cua te) OR (cua cu)).
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) or (dac sac)) ky lang xa hoi. lieu va nam tuc va dan tai ((cua te) or (cua cu))*.