Perhaps you should try some spelling variations:
tai nhanh » tai thanh, thai thanh, tai chinh
cham duc » pham duc, pham duy, phan duc
thai cua » than cua, tai cuc, dai cua
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va, hieu van
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky tang xa hoi. hieu ve ((cham duc) OR (cham soc)) tai nhanh ((thai cua) or (tri cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky tang xa hoi. hieu ve ((cham duc) OR (cham soc)) tai nhanh ((thai cua) OR (tri cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky tang xa hoi. hieu ve ((cham duc) OR (cham soc)) tai nhanh ((thai cua) or (tri cua)) triet".
• Adding a wildcard symbol may retrieve word variants: su sac ky tang xa hoi. hieu ve ((cham duc) OR (cham soc)) tai nhanh ((thai cua) or (tri cua)) triet*.