Perhaps you should try some spelling variations:
va trien » va truyen, va thiet, va tuyen
thi hanh » thi thanh
hanh sua » hinh su, hanh va, hanh tu
va triet » va thiet, ve triet, cua triet
hanh lam » thanh lap, hanh kem, hanh va
van hanh » van thanh, ban hanh, van anh
sach thi » sach thu, sach tai, sach thieu
tuc van » thuc van, truc van, tuc va
su sach » so sach, vu sach
ve cham » va cham, ve chat, vu cham
sua hoi » sua doi, cua hoi, sua voi
va cam » va cham, va cac, va cao

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