Perhaps you should try some spelling variations:
mot doanh » mot thanh, hoa doanh, voi doanh
doanh hoa » doanh khoa, doanh hoan, danh hoa
dich hoc » sinh hoc, hinh hoc, tinh hoc
cuu tong » cuu cong, cuu tinh, huu tung
tong mot » trong mot, tong cot, cong mot
hoi danh » hop danh, hoi dan, hoc danh
nhan tai » van tai, toan tai
hang tai » hang va, dung tai
te dich » ve dich, tam dich, tap dich
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: te dich hoc tap, nghien cuu tong mot doanh hoa hoc ma hoi danh ((nhan tai) OR (hang tai))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te dich hoc tap, nghien cuu tong mot doanh hoa hoc ma hoi danh ((nhan tai) OR (hang tai))".
• Adding a wildcard symbol may retrieve word variants: te dich hoc tap, nghien cuu tong mot doanh hoa hoc ma hoi danh ((nhan tai) OR (hang tai))*.