Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
thuc dan » thuc hanh, hoc dan, thuc vat
xang xa » lang xa, mang xa, ang xa
hieu va » lieu va, hieu qua
cua tre » cuu tre, cua triet, dua tren
truc va » thuc va, thuc vat, trung va
sach ty » sach y, sach tu, sach thu
cua te » cua tu
anh va » hanh va
va dai » va dao, vi dai, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty xang xa hoi. hieu va dai ((truc va) or (thuc dan)) anh va ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty xang xa hoi. hieu va dai ((truc va) OR (thuc dan)) anh va ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty xang xa hoi. hieu va dai ((truc va) or (thuc dan)) anh va ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: thu sach ty xang xa hoi. hieu va dai ((truc va) or (thuc dan)) anh va ((cua tre) OR (cua te))*.