Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
xang xay » dang xay, van xay, xang dau
sach ty » sach tu, sach thu, xach tay
tinh ve » trinh ve, tinh ven, dinh ve
va tinh » may tinh
thue va » thuc va, thuyet va, thuc vat
xay hoi » xa hoi, tay hoi, cay phoi
ve cac » va cac, vien cac
ve cua » le cua, de cua, te cua
ve cuc » ve cuoc, ve suc, ve cum

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ty) OR (sach y)) xang xay hoi. hieu ((ve cuc) or (ve cac)) thue va tinh ve cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach y)) xang xay hoi. hieu ((ve cuc) OR (ve cac)) thue va tinh ve cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) OR (sach y)) xang xay hoi. hieu ((ve cuc) or (ve cac)) thue va tinh ve cua viet".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) OR (sach y)) xang xay hoi. hieu ((ve cuc) or (ve cac)) thue va tinh ve cua viet*.