Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
va triet » va thiet, va trien, ve triet
toc sach » hoc sach, doc sach, thuoc sach
thi hanh » thi thanh
hanh lam » hanh kem, hanh va, dinh lam
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
hanh xa » hanh va, hanh ma, hanh xu
cam tu » cam thu, nam tu, dam tu
ve cam » ve cham, ve cac, va cam

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