Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh lai » hanh lam, hanh tai, thanh lap
van hanh » van thanh, ban hanh, van anh
hieu van » hieu va, thien van, lieu va
lang van » dang van, tang van, hoang van
lai cua » dai cua, hai cua, lai chau
duc van » duc va, duc tan, duc manh
lam duc » lam duoc, pham duc, nam duoc
van lam » van nam
tu sach » thu sach, te sach, tu cach
lang xa » lang ha, dang xay
su sach » so sach, vu sach

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