Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tham thuc » nham thuc, pham thuc, tam thuc
toc sach » hoc sach, doc sach, thuoc sach
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
ve tham » va tham, ve cham, vi tham
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) or (te sach)) ky ((nang xa) or (lang xa)) hoi. hieu ve tham thuc va danh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (te sach)) ky ((nang xa) OR (lang xa)) hoi. hieu ve tham thuc va danh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (te sach)) ky ((nang xa) or (lang xa)) hoi. hieu ve tham thuc va danh vi cua triet*.