Perhaps you should try some spelling variations:
hoc khanh » hoc nhanh, hoc thanh, hoc hanh
khanh hoa » thanh hoa, hang hoa
danh nhan » doanh nhan, thanh nhan, benh nhan
cuu cong » cua cong, thu cong
cac cong » cua cong
hoi danh » hop danh, hoi dan, hoc danh
nhan tai » hang tai, van tai, toan tai
ban hoc » bang hoc, van hoc, bai hoc
tu ban » thu ban, te ban
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ban hoc tap, nghien ((cuu cong) or (cac cong)) hoc khanh hoa hoc xa hoi danh nhan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ban hoc tap, nghien ((cuu cong) OR (cac cong)) hoc khanh hoa hoc xa hoi danh nhan tai.
• Adding a wildcard symbol may retrieve word variants: tu ban hoc tap, nghien ((cuu cong) or (cac cong)) hoc khanh hoa hoc xa hoi danh nhan tai*.