Perhaps you should try some spelling variations:
trinh vat » trinh van, trinh luat, sinh vat
chat nuoc » nhat nuoc, khat nuoc, thoat nuoc
toc sach » hoc sach, doc sach, thuoc sach
hieu cao » chieu cao, hieu cac, hieu ca
danh gia » dan gian
lang xa » lang ha, dang xay, lang van
y lang » o lang, _ lang, tay lang
cua tu » cua tuc, cua su, cua cu

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: toc sach y lang xa hoi. hieu cao chat nuoc va ((danh gia) OR (trinh vat)) cua tu~.
• Adding a wildcard symbol may retrieve word variants: toc sach y lang xa hoi. hieu cao chat nuoc va ((danh gia) or (trinh vat)) cua tu*.