Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
van hanh » van thanh, ban hanh, van ban
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
van anh » van thanh, tuan anh, van minh
via cua » gia cua, gian cua, giau cua
ve cac » va cac, vien cac
x hoi » xa hoi, o hoi, 5 hoi

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 ((x hoi) or (x ho)). hieu ve cac xuc ((van hanh) OR (van anh)) via cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang ((x hoi) OR (x ho)). hieu ve cac xuc ((van hanh) OR (van anh)) via cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang ((x hoi) or (x ho)). hieu ve cac xuc ((van hanh) OR (van anh)) via cua triet".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang ((x hoi) or (x ho)). hieu ve cac xuc ((van hanh) OR (van anh)) via cua triet*.