Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
hach toan » thanh toan, manh toan
khong hoc » khung hoc, thong hoc, khong thuoc
toan tap » toan ban
dong hoc » dong co, dong luc
nang dau » hang dau, xang dau, nang du
tu hach » tu hanh, tu cach, tu sach
mon hoc » toan hoc
va nang » van nang, da nang, cam nang
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 hach toan tap, nghien cuu ((mon hoc) or (dong hoc)) nganh khong hoc xa hoi va nang dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu hach toan tap, nghien cuu ((mon hoc) OR (dong hoc)) nganh khong hoc xa hoi va nang dau.
• Adding a wildcard symbol may retrieve word variants: tu hach toan tap, nghien cuu ((mon hoc) or (dong hoc)) nganh khong hoc xa hoi va nang dau*.