Perhaps you should try some spelling variations:
phan huong » phan thuong, phan xuong, phan hong
thanh nhan » thanh phan, thanh san, thanh toan
huong hoa » phuong hoa, hung hoa, luong khoa
hoi thanh » hoc thanh, hai thanh, hoa thanh
mach hoc » cach hoc, dich hoc, anh hoc
cuu cong » thu cong, cac cong
hoc phan » hoc dan, hoc pho
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 huong hoa xa hoi thanh 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 huong hoa xa hoi thanh nhan va.
• Adding a wildcard symbol may retrieve word variants: su mach hoc tap, nghien ((cuu cong) or (cua cong)) hoc phan huong hoa xa hoi thanh nhan va*.