Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van ban
nang mai » nang ma, nang tai, lang mai
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
sach ky » sac ky, sach y, sach ty
van anh » van thanh, tuan anh, van minh
va tinh » may tinh
tu sach » thu sach, su sach, te sach
ve cac » va cac, vien cac
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang mai hoi. hieu ve cac xuc ((((van hanh) or (van anh))) or (va tinh)) di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang mai hoi. hieu ve cac xuc ((((van hanh) OR (van anh))) OR (va tinh)) di cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang mai hoi. hieu ve cac xuc ((((van hanh) or (van anh))) or (va tinh)) di cua triet*.