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

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