Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
thuc xay » thuc day, tuc xay, thuat xay
hanh vai » hanh vi, hanh va, hanh tai
cau treo » cau theo, cau tren, cau triet
hieu van » hieu va, thien van, lieu va
thuc xa » tuc xa, thuc va, thuc ha
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
cua tre » cua te, cuu tre, cua triet

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 van nam ((thuc xa) OR (thuc xay)) hanh vai ((cua tre) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty xang xa hoi. hieu van nam ((thuc xa) OR (thuc xay)) hanh vai ((cua tre) OR (cau treo))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty xang xa hoi. hieu van nam ((thuc xa) OR (thuc xay)) hanh vai ((cua tre) or (cau treo))*".