Perhaps you should try some spelling variations:
tai nhanh » tai thanh, thai thanh, tai chinh
cham duc » pham duc, cham soc, pham duy
thai cua » than cua, tai cuc, dai cua
kho tang » cao tang
duc tai » duc thai, luc tai, duc tan
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
ky tang » ky nang, ky dang, ky trong
su sac » su sach, su cac, su xac

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) OR (kho tang)) xa hoi. hieu ve cham duc 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) OR (kho tang)) xa hoi. hieu ve cham duc 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) OR (kho tang)) xa hoi. hieu ve cham duc tai nhanh ((thai cua) or (tri cua)) triet".
• Adding a wildcard symbol may retrieve word variants: su sac ((ky tang) OR (kho tang)) xa hoi. hieu ve cham duc tai nhanh ((thai cua) or (tri cua)) triet*.