Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh va » thanh van, hanh va, thanh ha
sach ky » sac ky, sach y, sach ty
thuc va » thuc vat, thuc dan, thuc day
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
va chan » va phan, va chat, va cham
va can » va cac, va cao, va con

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