Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hanh lai » hanh lam, hanh tai, thanh lap
van hanh » van thanh, ban hanh, van anh
cham duc » pham duc, cham soc, pham duy
van cham » van chat, van tham, va cham
hieu van » hieu va, thien van, lieu va
duc van » duc va, duc tan, duc manh
sach ty » sach tu, sach thu, xach tay
nang xa » lang xa, nang ma, mang xa

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 ty) or (sach y)) ((nang xa) or (nang x)) hoi. hieu van cham duc van hanh lai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach y)) ((nang xa) OR (nang x)) hoi. hieu van cham duc van hanh lai su triet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach y)) ((nang xa) or (nang x)) hoi. hieu van cham duc van hanh lai su triet*.