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
cham duc » pham duc, cham soc, pham duy
hieu va » lieu va, hieu qua
lai cua » dai cua, hai cua, lai chau
duc van » duc va, duc tan, duc manh
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
hieu ve » hieu van
lang xa » lang ha, dang xay, lang van
nang xa » nang x, 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: so sach ty ((nang xa) OR (lang xa)) hoi. ((hieu ve) or (hieu va)) cham duc van hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty ((nang xa) OR (lang xa)) hoi. ((hieu ve) OR (hieu va)) cham duc van hanh lai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty ((nang xa) OR (lang xa)) hoi. ((hieu ve) or (hieu va)) cham duc van hanh lai cua triet".
• Adding a wildcard symbol may retrieve word variants: so sach ty ((nang xa) OR (lang xa)) hoi. ((hieu ve) or (hieu va)) cham duc van hanh lai cua triet*.