Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cua triet » cua viet, su triet, va triet
hoc sach » hoc sinh, hoc cac, hoc anh
nhan tai » hang tai, van tai, toan tai
nang xa » nang x, lang xa, nang ma
cam tuc » cam xuc, cam tu, nam thuc
xa nhan » ca nhan, va nhan, xa phan
cua tre » cua te, cuu tre, dua tren
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuat sach) or (hoc sach)) ky nang xa hoi. lieu va cam tuc xa nhan tai ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (hoc sach)) ky nang xa hoi. lieu va cam tuc xa nhan tai ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat sach) or (hoc sach)) ky nang xa hoi. lieu va cam tuc xa nhan tai ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) or (hoc sach)) ky nang xa hoi. lieu va cam tuc xa nhan tai ((cua tre) OR (cua triet))*.