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

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