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

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 toc) OR (hieu hoc)) 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 toc) OR (hieu hoc)) 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 toc) OR (hieu hoc)) cham duc va hanh de ve triet*".