Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
can thuc » dan thuc, van thuc, cay thuc
va thanh » gia thanh, ban thanh, le thanh
va tinh » may tinh
so sach » bo sach, co sach, hoc sach
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
so sanh » do sanh
y nang » ky nang, ly nang, v nang
ve cua » le cua, de cua, te cua
va can » va chan, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) or (so sanh)) y nang xa hoi. hieu va can thuc ((va thanh) OR (va tinh)) ve cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (so sanh)) y nang xa hoi. hieu va can thuc ((va thanh) OR (va tinh)) ve cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (so sanh)) y nang xa hoi. hieu va can thuc ((va thanh) OR (va tinh)) ve cua triet".
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (so sanh)) y nang xa hoi. hieu va can thuc ((va thanh) OR (va tinh)) ve cua triet*.