Perhaps you should try some spelling variations:
ve triet » va trien, su triet
hieu tuc » hieu thuc, hieu luc, hieu thuoc
tri nang » thi nang, tra nang, tri bang
cham duc » pham duc, cham soc, pham duy
hanh de » hanh ve, hanh kem
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, tu cach
nang xa » nang x, lang xa, nang ma
te sach » toc sach
hieu tu » chieu tu, hien tu, lieu tu

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 (te sach)) tri nang xa hoi. ((hieu tu) OR (hieu tuc)) cham duc va hanh de ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) tri nang xa hoi. ((hieu tu) OR (hieu tuc)) cham duc va hanh de ve triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) tri nang xa hoi. ((hieu tu) OR (hieu tuc)) cham duc va hanh de ve triet*".