Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
cua viet » hoa viet, cua vat, cua dieu
sach thu » sach thue, sach thieu, sach tham
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
xuc van » duc van, luc van, vuc van
vien da » vien dai, hien dai
sach ty » sach y, sach tu, xach tay
xang ma » tang ma, nang ma, sang ma
ca viet » va viet, co viet, hoa viet
ma hoi » mai hoi, xa hoi, ma hoa

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 ty) OR (sach thu)) xang ma hoi. hieu vien da xuc van hanh vai ((cua viet) or (ca viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach thu)) xang ma hoi. hieu vien da xuc van hanh vai ((cua viet) OR (ca viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) OR (sach thu)) xang ma hoi. hieu vien da xuc van hanh vai ((cua viet) or (ca viet))".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) OR (sach thu)) xang ma hoi. hieu vien da xuc van hanh vai ((cua viet) or (ca viet))*.