Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac
cac giac » cac giai, cac giao, canh giac
ha triet » nha triet, va triet, hanh triet
hoc anh » hoc nganh, hoc nhanh, ngoc anh
nang xa » nang x, lang xa, nang ma
cac gia » cac giai, cac giao, tac gia
va nam » van nam, ha nam, va nay

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 (hoc anh)) ky nang xa hoi. lieu va nam ((cac gia) or (cac giac)) thanh pho ha triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (hoc anh)) ky nang xa hoi. lieu va nam ((cac gia) OR (cac giac)) thanh pho ha triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc sach) OR (hoc anh)) ky nang xa hoi. lieu va nam ((cac gia) or (cac giac)) thanh pho ha triet".
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) OR (hoc anh)) ky nang xa hoi. lieu va nam ((cac gia) or (cac giac)) thanh pho ha triet*.