Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
va triet » va thiet, va trien, ve triet
hieu cac » hieu luc, hieu va, hieu van
hanh lam » hanh kem, hanh va, dinh lam
chat luc » chat xuc, chat lua, nhan luc
cac chat » cao chat, cac thuat, cac nha
hung xa » chung xa, huong xa, hung ha
sach tu » sach thu, cach tu, sach uu
luc van » luoc van, luu van, duc van
sach ty » sach y, sach thu, xach tay

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