Perhaps you should try some spelling variations:
nghien huu » nghien cuu, nguyen huu, nhiem huu
nganh cong » nhanh chong, thanh cong
hoc nganh » hoc nhanh
huu toan » huu tuan, cuu toan, huy toan
toan hoc » toan khoa, van hoc, hoa hoc
cong hoc » dong hoc, cong hoa, cong coc
phap dau » phan dau, phap day, phap cau
pham dau » phan dau, pham dac, pham dat
cac thu » cach thuc, cac thoi
thu tap » thu thap, thuc tap, thu tai
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 cac thu tap, nghien huu toan hoc nganh cong hoc mai hoi va ((phap dau) OR (pham dau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac thu tap, nghien huu toan hoc nganh cong hoc mai hoi va ((phap dau) OR (pham dau))".
• Adding a wildcard symbol may retrieve word variants: tu cac thu tap, nghien huu toan hoc nganh cong hoc mai hoi va ((phap dau) OR (pham dau))*.