Perhaps you should try some spelling variations:
ve triet » va trien, su triet
van hanh » van thanh, ban hanh, van anh
pham duy » pham duc
cham duc » pham duc, cham soc, phan duc
hieu toc » hieu hoc, hieu tuc, sieu toc
tri nang » thi nang, tra nang, tri bang
nang xa » nang x, lang xa, nang ma
te sach » toc sach
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 ((cham duc) OR (pham duy)) van 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 ((cham duc) OR (pham duy)) van 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 ((cham duc) OR (pham duy)) van hanh de ve triet*".