Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va cham » va chat, va tham
va vanh » va danh, va hanh, va anh
tai cua » thai cua, tai cuc, tri cua
va cam » va cac, va cao, va cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang xa hoi. hieu ((va cam) OR (va cham)) xuc ((va vanh) or (va van)) tai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang xa hoi. hieu ((va cam) OR (va cham)) xuc ((va vanh) OR (va van)) tai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang xa hoi. hieu ((va cam) OR (va cham)) xuc ((va vanh) or (va van)) tai cua triet".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang xa hoi. hieu ((va cam) OR (va cham)) xuc ((va vanh) or (va van)) tai cua triet*.