Perhaps you should try some spelling variations:
phan hong » phan cong, pham hong, phan song
danh nhan » doanh nhan, thanh nhan, benh nhan
mach hoc » cach hoc, dich hoc, anh hoc
cuu cong » thu cong, cac cong
hoc phan » hoc dan, hoc pho
hong hoa » huong hoa, hoang hoa, hong khoa
hoi danh » hop danh, hoi dan, hoc danh
su mach » su sach
nhan va » nhan tai, nhan dan, nhan tao

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

• Performing a fuzzy search may retrieve terms with similar spellings: su mach hoc tap, nghien ((cuu cong) or (cua cong)) hoc phan hong hoa xa hoi danh nhan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su mach hoc tap, nghien ((cuu cong) OR (cua cong)) hoc phan hong hoa xa hoi danh nhan va.
• Adding a wildcard symbol may retrieve word variants: su mach hoc tap, nghien ((cuu cong) or (cua cong)) hoc phan hong hoa xa hoi danh nhan va*.