Perhaps you should try some spelling variations:
hieu luan » hieu luat, hieu quan, tieu luan
luan chat » luan chi, van chat, luan phan
va tuyen » va truyen, tac tuyen, ke tuyen
ve triet » va trien, su triet
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
chat luc » chat xuc, chat lua, nhan luc
nang mai » nang ma, nang tai, lang mai
mai hoi » mai khoi, dai hoi, lai hoi
luc va » duc va, tuc va, loc va
su cac » tu cac, su cao, su can
su sac » su sach, su xac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sac) OR (su cac)) ky nang mai hoi. hieu luan chat luc va thanh vi ((ve triet) or (va tuyen))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su cac)) ky nang mai hoi. hieu luan chat luc va thanh vi ((ve triet) OR (va tuyen)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sac) OR (su cac)) ky nang mai hoi. hieu luan chat luc va thanh vi ((ve triet) or (va tuyen))".
• Adding a wildcard symbol may retrieve word variants: ((su sac) OR (su cac)) ky nang mai hoi. hieu luan chat luc va thanh vi ((ve triet) or (va tuyen))*.