Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
cham duc » pham duc, cham soc, phan duc
hanh lai » hanh lam, hanh tai, thanh lap
van hanh » van thanh, ban hanh, van anh
pham duy » pham duc
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
hieu ve » hieu va, hieu van
xay hoi » tay hoi, cay phoi, gay thoi
tu dang » thu dang, tu dong, su dang

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