Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
khach ly » khanh ly, khao ly, khich le
thuc van » thuc vat, thuc dan, thuc hanh
danh du » danh dau, danh tu, dinh du
thuc va » thuc vat, thuc dan, thuc day
va cham » va chat, va tham
hieu va » lieu va, hieu qua
mang xa » mang may, dang xay, mang cua
lang xa » lang ha, dang xay, lang van
du cua » duy cua, dau cua, dum 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: vu khach ly ((lang xa) or (mang xa)) hoi. hieu va cham ((thuc van) or (thuc va)) danh du cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach ly ((lang xa) OR (mang xa)) hoi. hieu va cham ((thuc van) OR (thuc va)) danh du cua te.
• Adding a wildcard symbol may retrieve word variants: vu khach ly ((lang xa) or (mang xa)) hoi. hieu va cham ((thuc van) or (thuc va)) danh du cua te*.