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

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