Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
nam quoc » nam duoc, nam buoc, nam thuoc
cam quoc » cac quoc, cao quoc, han quoc
te sach » toc sach
benh te » benh tre, benh ve, benh he
bo benh » so benh, o benh, ba benh
lang ha » long ha
lang xa » dang xay, lang van
te cua » tue cua, le cua, de cua
cua te » cua tu

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: te sach y ((lang xa) OR (lang ha)) hoi. hieu van ((cam quoc) OR (nam quoc)) bo benh te cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((lang xa) or (lang ha)) hoi. hieu van ((cam quoc) OR (nam quoc)) bo benh te cua te~".
• Adding a wildcard symbol may retrieve word variants: te sach y ((lang xa) or (lang ha)) hoi. hieu van ((cam quoc) OR (nam quoc)) bo benh te cua te*.