Perhaps you should try some spelling variations:
va trien » va truyen, va thiet, va tuyen
ve triet » su triet
thi hanh » thi thanh
hanh lam » thanh lap, hanh kem, hanh va
van hanh » van thanh, ban hanh, van anh
tuc van » thuc van, truc van, tuc va
tu sach » thu sach, su sach, tu cach
cam tuc » cam xuc, cam tu, nam thuc
hieu ve » hieu va, hieu van
hanh xa » hanh va, hanh ma, hanh xu
te sach » toc sach
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: ((tu sach) or (te sach)) thi hanh xa hoi. hieu ve cam tuc van hanh lam ((ve triet) OR (va trien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) thi hanh xa hoi. hieu ve cam tuc van hanh lam ((ve triet) OR (va trien))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) thi hanh xa hoi. hieu ve cam tuc van hanh lam ((ve triet) OR (va trien))*".