Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » thien van, lieu va
minh lai » minh hai, minh ai, minh lam
cham duc » pham duc, cham soc, pham duy
lai cua » dai cua, hai cua, lai chau
va minh » van minh, vua minh, va kinh
tu sach » thu sach, su sach, te sach
sach tu » sach thu, cach tu, sach ty
nang xa » nang x, lang xa, nang ma
tu nang » tru nang, tu nong, tu nano
hieu va » lieu va, hieu qua

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 tu nang xa hoi. ((((hieu ve) OR (hieu va))) or (hieu van)) cham duc va minh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu nang xa hoi. ((((hieu ve) OR (hieu va))) OR (hieu van)) cham duc va minh lai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tu nang xa hoi. ((((hieu ve) OR (hieu va))) or (hieu van)) cham duc va minh lai cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach tu nang xa hoi. ((((hieu ve) OR (hieu va))) or (hieu van)) cham duc va minh lai cua triet*.