Perhaps you should try some spelling variations:
nghien huu » nghien cuu, nguyen huu, nhiem huu
hoc nganh » hoc nhanh
danh phan » doanh phan, danh nhan, danh phap
thai danh » thai thanh, thai binh, thai den
nganh hoa » thanh hoa, khanh hoa, danh hoa
phan dau » phan tu, hang dau
phoi tai » hoi tai, phi tai, pham tai
xa thai » ca thai, a thai, da thai
su cach » su sach, tu cach, cuu cach
mot hoc » mon hoc, mo hoc, mot goc
huu mot » cuu mot, huy mot, hieu mot
hoc xa » hoc ma
su cac » tu cac, su cao, su can

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 mot hoc nganh hoa hoc xa thai danh phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su cach) OR (su cac)) phoi tai, nghien huu mot hoc nganh hoa hoc xa thai danh phan dau.
• Adding a wildcard symbol may retrieve word variants: ((su cach) or (su cac)) phoi tai, nghien huu mot hoc nganh hoa hoc xa thai danh phan dau*.