Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nang noi » nang doc
van hanh » van thanh, ban hanh, van ban
cac xuc » cam xuc, cac nuoc, chat xuc
tai cua » thai cua, tai cuc, tri cua
van anh » van thanh, tuan anh, van minh
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
nang co » nang cao, nang doc, nang hoc
ve cac » va cac, vien cac

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