Perhaps you should try some spelling variations:
ve triet » va trien, su triet
va triet » va thiet, va trien, cua triet
hanh lam » thanh lap, hanh kem, hanh va
van hanh » van thanh, ban hanh, van anh
hieu cao » chieu cao, hieu cac, hieu ca
chat luc » chat xuc, chat lua, nhan luc
hang xa » hoang xa, hang va, hang ca
sach ty » sach y, sach thu, xach tay
luc van » luoc van, luu van, duc van
sach tu » sach thu, cach tu, sach uu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach ty) or (sach tu)) hang xa hoi. hieu cao chat luc van hanh lam ((va triet) OR (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach tu)) hang xa hoi. hieu cao chat luc van hanh lam ((va triet) OR (ve triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ty) or (sach tu)) hang xa hoi. hieu cao chat luc van hanh lam ((va triet) OR (ve triet))".
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) or (sach tu)) hang xa hoi. hieu cao chat luc van hanh lam ((va triet) OR (ve triet))*.