Perhaps you should try some spelling variations:
nganh cong » nhanh chong, thanh cong
nghien cua » nghien cuu, nghiep cua, nghiep vua
hoc nganh » hoc nhanh
thanh van » thanh san, thanh toan, thanh phan
cua toan » cuu toan, xuan toan, cua thanh
toan hoc » toan khoa, van hoc, hoa hoc
sach hoi » sach doi, sach moi, cach thoi
cong hoa » dong hoa, dong hoc, hang hoa
va thanh » gia thanh, ban thanh, va tinh
hoi tap » hoi dap, hoc tap, hoi tai
mai hoi » mai khoi, dai hoi, lai hoi
tu sach » thu sach, su sach, te sach
ma hoi » xa hoi, ma hoa, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach hoi tap, nghien cua toan hoc nganh cong hoa ((ma hoi) or (mai hoi)) va thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoi tap, nghien cua toan hoc nganh cong hoa ((ma hoi) OR (mai hoi)) va thanh van.
• Adding a wildcard symbol may retrieve word variants: tu sach hoi tap, nghien cua toan hoc nganh cong hoa ((ma hoi) or (mai hoi)) va thanh van*.