Perhaps you should try some spelling variations:
hieu cua » hieu qua, dieu cua, bieu cua
su triet » su viet, ve triet
sach ky » sac ky, sach ty, sach kem
lang xa » lang ha, dang xay, lang van
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
van anh » van thanh, tuan anh, van minh
su tien » su kien, su hien, tu tieng
anh va » hanh va

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) or (sach y)) lang xa hoi. hieu cua cac xuc van anh va ((su triet) or (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach y)) lang xa hoi. hieu cua cac xuc van anh va ((su triet) OR (su tien)).
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sach y)) lang xa hoi. hieu cua cac xuc van anh va ((su triet) or (su tien))*.