Perhaps you should try some spelling variations:
nhanh dai » nhan dai, nhanh thai, nhan tai
nhanh hai » nhanh thai, thanh hai, nhanh ha
cham duc » pham duc, cham soc, pham duy
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
duc tai » duc thai, luc tai, duc tan
ky tang » ky nang, ky dang, kho tang
cua tre » cuu tre, cua triet, dua tren
su cac » tu cac, su cao, su can
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cac ky tang xa hoi. hieu ve cham duc tai ((nhanh dai) or (nhanh hai)) ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cac ky tang xa hoi. hieu ve cham duc tai ((nhanh dai) OR (nhanh hai)) ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: su cac ky tang xa hoi. hieu ve cham duc tai ((nhanh dai) or (nhanh hai)) ((cua tre) or (cua te))*.