Perhaps you should try some spelling variations:
hoc khanh » hoc nhanh, hoc thanh, hoc hanh
khanh hoa » thanh hoa, hang hoa
ban doanh » van doanh, san doanh, ban danh
thu tich » chu tich, chu thich, thue tinh
tich hoc » tinh hoc, dich hoc, tich hop
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hai van » thai van, ha van, hai tan
ban san » ban soan, ban dan, ban can
ma hai » ta hai, va hai, xa hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu tich hoc tap, nghien cuu mon hoc khanh hoa hoc ma hai van ((ban san) or (ban doanh))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu tich hoc tap, nghien cuu mon hoc khanh hoa hoc ma hai van ((ban san) OR (ban doanh)).
• Adding a wildcard symbol may retrieve word variants: thu tich hoc tap, nghien cuu mon hoc khanh hoa hoc ma hai van ((ban san) or (ban doanh))*.