Perhaps you should try some spelling variations:
cach thoi » cac thoi, cach thuc, cach noi
hoa nganh » hoc nganh, khoi nganh, hoa thanh
hoa doanh » toan doanh, hoa dan
thoi tap » toi tap, hoc tap, thoi dai
cuu cong » cua cong, thu cong, cac cong
khoa hoc » hoa hoc
phat tai » pham tai, phap tai, chat tai
tu cach » tu cac
hoc mai » hoc ma, hoc dai, hoc bai
mai hoi » mai khoi, dai hoi, lai 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 cach thoi tap, nghien cuu cong ((hoa nganh) or (hoa doanh)) khoa hoc mai hoi va phat tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach thoi tap, nghien cuu cong ((hoa nganh) OR (hoa doanh)) khoa hoc mai hoi va phat tai.
• Adding a wildcard symbol may retrieve word variants: tu cach thoi tap, nghien cuu cong ((hoa nganh) or (hoa doanh)) khoa hoc mai hoi va phat tai*.