Perhaps you should try some spelling variations:
thanh hoi » thanh hoai, thanh hoa, thanh hai
van thanh » ban thanh, van tuan
quoc van » quoc va, quoc ban, quoc lan
dang xay » dang van, van xay
cac quoc » cac nuoc, cac cuoc, cao quoc
te sach » toc sach
qua cac » cua cac
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, lang van
cua tuc » cua duc, cua tu, cua thuoc
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty ((lang xa) or (dang xay)) hoi. hieu qua cac quoc van thanh hoi ((cua te) or (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((lang xa) OR (dang xay)) hoi. hieu qua cac quoc van thanh hoi ((cua te) OR (cua tuc)).
• Adding a wildcard symbol may retrieve word variants: te sach ty ((lang xa) or (dang xay)) hoi. hieu qua cac quoc van thanh hoi ((cua te) or (cua tuc))*.