Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
cam quoc » cac quoc, cao quoc, nam quoc
lang van » dang van, tang van, hoang van
benh ve » benh va, benh vien, benh viem
quoc so » quoc son, nuoc so, quoc co
hieu va » lieu va, hieu qua
te sach » toc sach
lang xa » lang ha, dang xay
ve cua » le cua, de cua, te cua
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 y ((lang xa) or (lang van)) hoi. ((hieu van) OR (hieu va)) cam quoc so benh ve cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((lang xa) OR (lang van)) hoi. ((hieu van) OR (hieu va)) cam quoc so benh ve cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((lang xa) or (lang van)) hoi. ((hieu van) OR (hieu va)) cam quoc so benh ve cua te*".