Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
cham duc » pham duc, cham soc, pham duy
sach tu » sach thu, cach tu, sach ty
hanh de » hanh ve, hanh kem
va hanh » van hanh, va thanh, va danh
te sach » toc sach
hieu va » lieu va, hieu qua
hieu vu » hieu ve, hieu su, dieu vu
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: te sach tu nang xa hoi. ((hieu vu) OR (hieu va)) cham duc va hanh de ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu nang xa hoi. ((hieu vu) OR (hieu va)) cham duc va hanh de ((cua triet) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu nang xa hoi. ((hieu vu) OR (hieu va)) cham duc va hanh de ((cua triet) or (su triet))".
• Adding a wildcard symbol may retrieve word variants: te sach tu nang xa hoi. ((hieu vu) OR (hieu va)) cham duc va hanh de ((cua triet) or (su triet))*.