Perhaps you should try some spelling variations:
trinh vat » trinh van, trinh luat, sinh vat
tinh via » tinh gia, tinh va, tinh vi
so sach » so sanh, bo sach, co sach
tu cham » toc cham, thi cham
sach ly » sach y, sach lo, sach ty
ve cham » va cham, ve chat, vu cham
ly hang » ly quang
cua tre » cua te, cuu tre, cua triet
luc va » duc va, tuc va, loc va
va hoi » xa hoi, va hoc, va hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ly hang va hoi. hieu ((ve cham) or (tu cham)) luc va ((tinh via) or (trinh vat)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ly hang va hoi. hieu ((ve cham) OR (tu cham)) luc va ((tinh via) OR (trinh vat)) cua tre.
• Adding a wildcard symbol may retrieve word variants: so sach ly hang va hoi. hieu ((ve cham) or (tu cham)) luc va ((tinh via) or (trinh vat)) cua tre*.