Perhaps you should try some spelling variations:
mang dai » lang dai, mang dat, mang dau
hieu sau » hieu suat, tieu su, hieu va
chat xuc » chat huu, cam xuc, chao xu
va hanh » van hanh, va thanh, va danh
ky mang » ky nang, ke mang, ky dang
hieu su » tieu su, hieu so, hieu suat
tu bai » tu bat, te bai
vi cua » vai cua, di cua
xuc va » duc va, tuc va, luc va
cua te » cua tu
tu ban » thu ban, te ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu bai) OR (tu ban)) ky mang dai hoc. ((hieu su) or (hieu sau)) chat xuc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu bai) OR (tu ban)) ky mang dai hoc. ((hieu su) OR (hieu sau)) chat xuc va hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu bai) OR (tu ban)) ky mang dai hoc. ((hieu su) or (hieu sau)) chat xuc va hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu bai) OR (tu ban)) ky mang dai hoc. ((hieu su) or (hieu sau)) chat xuc va hanh vi cua te*.