Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hoc sach » hoc sinh, hoc cac, hoc anh
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
dan sai » danh sai, doan sai, dan tai
cua tre » cua te, cuu tre, dua tren
xuc va » duc va, tuc va, luc va
va dan » ca dan, va dao, va dau
x hoi » xa hoi, o hoi, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ky nang ((x hoi) or (x ho)). hieu va cac xuc va dan sai ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky nang ((x hoi) OR (x ho)). hieu va cac xuc va dan sai ((cua tre) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach ky nang ((x hoi) or (x ho)). hieu va cac xuc va dan sai ((cua tre) OR (cua triet))*".