Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh ve » hanh ve, thanh va, thanh vien
sach thu » sach thue, sach thieu, sach tham
thanh vi » hanh vi, thanh va, nhanh vi
cao cua » ca cua, co cua, cau cua
sach ty » sach y, sach tu, xach tay
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ve cao » va cao, ve bao, ve cac

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 ty) OR (sach thu)) nang xa hoi. hieu ve cao cua ban ((thanh vi) or (thanh ve)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach ty) OR (sach thu)) nang xa hoi. hieu ve cao cua ban ((thanh vi) OR (thanh ve)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach ty) OR (sach thu)) nang xa hoi. hieu ve cao cua ban ((thanh vi) or (thanh ve)) cua triet".
• Adding a wildcard symbol may retrieve word variants: so ((sach ty) OR (sach thu)) nang xa hoi. hieu ve cao cua ban ((thanh vi) or (thanh ve)) cua triet*.