Perhaps you should try some spelling variations:
dang khanh » dang hanh, dang thanh, dan khanh
thuc dang » thuoc dang, thuc dan, thuc dung
nam thuc » nam thuoc, am thuc, nam thu
khanh di » khanh bui, khanh duy, thanh doi
va triet » va thiet, va trien, ve triet
tu sach » thu sach, su sach, te sach
nang xa » lang xa, nang ma, ang xa
mang xa » lang xa, mang may, dang xay
thi van » thi lan, thi hanh, thi nang
di va » dai va, di vao, doi va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y ((((nang xa) OR (mang xa))) or (nang x)) hoi. thi van nam thuc dang khanh di va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((((nang xa) OR (mang xa))) OR (nang x)) hoi. thi van nam thuc dang khanh di va triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((((nang xa) OR (mang xa))) or (nang x)) hoi. thi van nam thuc dang khanh di va triet*".