Perhaps you should try some spelling variations:
nghien phu » nghiep phu, nghien cuu, nguyen phu
cuoc nganh » cac nganh, chuc nganh, cua nganh
phu luong » phan luong, thu huong, cu luong
hoc nganh » hoc nhanh
sach hoc » cach hoc, sach hoi, mach hoc
nong hoc » dong hoc, nang hoc, nong thon
cau luan » cu luan, dau luan, lau luan
tu sach » thu sach, su sach, te sach
hoi cau » hoi chu, hoc cau, hoa cau
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: tu sach hoc tap, nghien phu luong ((cuoc nganh) or (hoc nganh)) nong hoc xa hoi cau luan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoc tap, nghien phu luong ((cuoc nganh) OR (hoc nganh)) nong hoc xa hoi cau luan van.
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien phu luong ((cuoc nganh) or (hoc nganh)) nong hoc xa hoi cau luan van*.