Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
cau triet » cau trieu, su triet, cua triet
hieu van » hieu va, thien van, lieu va
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
van cam » van nam, van lam, van cau
hang xa » hoang xa, hang va, hang ca
ty hang » ly hang, ty xang, thi hang
tuc va » truc va, tuc xa, duc va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty hang xa hoi. hieu van cam ((tuc va) OR (thuc va)) thanh lai ((cua tre) OR (cau triet))~.
• Adding a wildcard symbol may retrieve word variants: tu sach ty hang xa hoi. hieu van cam ((tuc va) or (thuc va)) thanh lai ((cua tre) or (cau triet))*.