Perhaps you should try some spelling variations:
dat khanh » van khanh, duy khanh
qua cham » qua hai, qua cac, va cham
cham xuc » cam xuc, chat xuc, cham soc
cua viet » ca viet, hoa viet, cua vat
tu sach » thu sach, su sach, te sach
ky lang » ky nang, ky dang, tay lang
ky tang » ky nang, ky dang, kho tang
xuc dat » duc duat, duoc dat, quoc dat
khanh v » khanh van, thanh va, thanh ve
cua tre » cua te, cuu tre, cua triet

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 ((ky lang) or (ky tang)) xa hoi. hieu qua cham xuc dat khanh v ((cua tre) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky lang) OR (ky tang)) xa hoi. hieu qua cham xuc dat khanh v ((cua tre) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky lang) or (ky tang)) xa hoi. hieu qua cham xuc dat khanh v ((cua tre) or (cua viet))*.