Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
thuc dan » thuc hanh, hoc dan, thuc vat
dan hanh » dang hanh, dan khanh, dan thanh
va triet » va thiet, va trien, ve triet
tu sach » thu sach, su sach, te sach
nang xa » lang xa, nang ma, mang xa
thi van » thi lan, thi hanh, thi nang
hanh di » hanh vi, hanh de, hang di
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 (nang x)) hoi. thi van nam thuc dan hanh di va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((nang xa) OR (nang x)) hoi. thi van nam thuc dan hanh di va triet".
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang xa) OR (nang x)) hoi. thi van nam thuc dan hanh di va triet*.