Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cua triet » cua viet, su triet, va triet
hanh noi » ha noi, hanh vi, nang noi
van hanh » van thanh, ban hanh, van anh
noi cua » hoi cua, doi cua, moi cua
xuc van » duc van, luc van, xuc ban
tu cach » tu cac
nang xa » nang x, lang xa, nang ma
va cao » va cac, va co, va dao
va cam » va cham, va cac, 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: ((tu cach) or (thuoc sach)) ky nang xa hoi. hieu ((va cam) OR (va cao)) xuc van hanh noi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thuoc sach)) ky nang xa hoi. hieu ((va cam) OR (va cao)) xuc van hanh noi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (thuoc sach)) ky nang xa hoi. hieu ((va cam) OR (va cao)) xuc van hanh noi cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (thuoc sach)) ky nang xa hoi. hieu ((va cam) OR (va cao)) xuc van hanh noi cua triet*.