Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
sach ky » sac ky, sach y, sach ty
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
te sach » toc sach
ve cham » va cham, ve chat, vu cham
nang xa » nang x, lang xa, nang ma
va chat » van chat, va phat, hoa chat
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: te sach ky nang xa hoi. hieu ((ve cham) or (((va chat) OR (cao chat)))) thuc va hanh di va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu ((ve cham) OR (((va chat) OR (cao chat)))) thuc va hanh di va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu ((ve cham) or (((va chat) OR (cao chat)))) thuc va hanh di va triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu ((ve cham) or (((va chat) OR (cao chat)))) thuc va hanh di va triet*.