Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
doc sach » hoc sach, toc sach, nuoc sach
qua cham » qua hai, qua cac, va cham
cham xuc » cam xuc, chat xuc, cham soc
dung sai » dung tai, dung va, dung dat
ky lang » ky nang, ky dang, tay lang
ky tang » ky nang, ky dang, kho tang
va dung » van dung, va duong, vat dung
xuc va » duc va, tuc va, luc va
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc sach ((ky lang) OR (ky tang)) xa hoi. hieu qua cham xuc va dung sai ((cua triet) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach ((ky lang) OR (ky tang)) xa hoi. hieu qua cham xuc va dung sai ((cua triet) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc sach ((ky lang) OR (ky tang)) xa hoi. hieu qua cham xuc va dung sai ((cua triet) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: doc sach ((ky lang) OR (ky tang)) xa hoi. hieu qua cham xuc va dung sai ((cua triet) or (cua tu))*.