Perhaps you should try some spelling variations:
kham cuu » cham cuu, khao cuu, kham chua
nang xa » nang x, lang xa, nang ma
va kham » va cham, va khao, va tham
hieu va » lieu va, hieu qua
sach va » sach xa, sach ha, sach dao
sach v » sach 2, sach vay
cuu ve » cuu va
ve dan » ke dan, le dan, va dan
dan va » doan va, dan ca, ban va
va cua » va chua, via cua, ca 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 v) OR (sach va))) OR (sach y)) nang xa hoi. hieu va kham cuu ve dan va cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((((sach v) OR (sach va))) or (sach y)) nang xa hoi. hieu va kham cuu ve dan va cua te~".
• Adding a wildcard symbol may retrieve word variants: te ((((sach v) OR (sach va))) or (sach y)) nang xa hoi. hieu va kham cuu ve dan va cua te*.