Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cua triet » cua viet, su triet, va triet
hoc anh » hoc nganh, hoc nhanh, ngoc anh
va tham » van tham, va cham, va thanh
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
ve tham » ve cham, vi tham, van tham
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuoc sach) or (hoc anh)) ky nang x hoi. hieu ((ve tham) OR (va tham)) thuc va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (hoc anh)) ky nang x hoi. hieu ((ve tham) OR (va tham)) thuc va hanh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuoc sach) or (hoc anh)) ky nang x hoi. hieu ((ve tham) OR (va tham)) thuc va hanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (hoc anh)) ky nang x hoi. hieu ((ve tham) OR (va tham)) thuc va hanh vi cua triet*.