Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nang mai » nang ma, nang tai, lang mai
va hanh » van hanh, va thanh, va danh
cau luc » cau truc, cau phuc
cac luc » coc luc, cac nuoc, cac cuoc
tu cach » tu cac
mai hoi » mai khoi, dai hoi, lai hoi
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
vi cua » vai cua, di 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 cach) or (su sach)) ky nang mai hoi. hieu va ((cac luc) or (cau luc)) va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su sach)) ky nang mai hoi. hieu va ((cac luc) OR (cau luc)) va hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (su sach)) ky nang mai hoi. hieu va ((cac luc) or (cau luc)) va hanh vi cua triet*.