Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
te sach » toc sach
sach ty » sach y, sach tu, sach thu
nang xa » lang xa, nang ma, mang xa
van dat » van dao, van dau, dan dat
va tinh » may tinh
tinh va » tich va, trinh van, trinh vat
cua tuc » cua duc, cua thuoc, luat tuc
cua tu » cua su, cua cu, cua te
nuoc » quoc, duoc, ngoc

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 ((nang xa) or (nang x)) hoi. hieu van dat nuoc va tinh va ((cua tu) or (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((nang xa) OR (nang x)) hoi. hieu van dat nuoc va tinh va ((cua tu) OR (cua tuc)).
• Adding a wildcard symbol may retrieve word variants: te sach ty ((nang xa) or (nang x)) hoi. hieu van dat nuoc va tinh va ((cua tu) or (cua tuc))*.