Perhaps you should try some spelling variations:
ve triet » va trien, su triet
ban hanh » ban hang
van hanh » van thanh, van anh, van ban
cam luc » cam xuc, cau luc
sach ty » sach y, sach tu, sach thu
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
nang co » nang cao, nang doc, nang noi
ty nang » ky nang, ty xang, ty hang
ve cam » ve cham, ve cac, va cam
co hoi » co hoc, co loi
va dan » ca dan, va dao, va dau
hoi ve » hoi va, moi ve, noi ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty nang co hoi. hieu ve cam luc ((((van hanh) or (ban hanh))) or (va dan)) hoi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang co hoi. hieu ve cam luc ((((van hanh) OR (ban hanh))) OR (va dan)) hoi ve triet.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang co hoi. hieu ve cam luc ((((van hanh) or (ban hanh))) or (va dan)) hoi ve triet*.