Perhaps you should try some spelling variations:
nghien huu » nghien cuu, nguyen huu, nhiem huu
hoc nganh » hoc nhanh
nganh hoa » thanh hoa, khanh hoa, danh hoa
phoi tai » hoi tai, phi tai, pham tai
den nhan » de nhan, benh nhan, dung nhan
nhan dan » phan dau, gian dan, nhan tai
su cach » su sach, tu cach, cuu cach
huu mon » huu son, hau mon, huu mot
mon hoc » toan hoc, dong hoc
xa thai » ca thai, a thai, da thai
su cac » tu cac, su cao, su can
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: ((su cach) or (su cac)) phoi tai, nghien huu mon hoc nganh hoa hoc xa thai den nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su cach) OR (su cac)) phoi tai, nghien huu mon hoc nganh hoa hoc xa thai den nhan dan.
• Adding a wildcard symbol may retrieve word variants: ((su cach) or (su cac)) phoi tai, nghien huu mon hoc nganh hoa hoc xa thai den nhan dan*.