Perhaps you should try some spelling variations:
cham tuc » nham thuc, pham thuc, tham thuc
thu sach » thuat sach, thuoc sach, thu hoach
thi hanh » thi thanh
va triet » va trien, ve triet, cua triet
hanh lam » thanh lap, hanh kem, hanh va
van hanh » van thanh, ban hanh, van anh
tu sach » su sach, te sach, tu cach
ve cham » va cham, ve chat, vu cham
tuc van » thuc van, truc van, tuc va
hieu ve » hieu va, hieu van
hanh xa » hanh va, hanh ma, hanh xu
thiet » thieu

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 (thu sach)) thi hanh xa hoi. hieu ve cham tuc van hanh lam ((va triet) or (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) thi hanh xa hoi. hieu ve cham tuc van hanh lam ((va triet) OR (va thiet)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) thi hanh xa hoi. hieu ve cham tuc van hanh lam ((va triet) or (va thiet))*.