Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
hoc nganh » hoc nhanh
sach hoc » cach hoc, sach hoi, mach hoc
cong hoc » dong hoc, cong hoa, cong coc
nong hoc » dong hoc, nang hoc, duong hoc
dan phan » doan phan, dan chan, van phan
te sach » toc sach
hoi dan » hoa dan, hoc dan, hoi dap
phan va » phan van, nhan va, han va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach hoc tap, nghien cua cong hoc nganh ((nong hoc) or (nong thon)) xa hoi dan phan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach hoc tap, nghien cua cong hoc nganh ((nong hoc) OR (nong thon)) xa hoi dan phan va.
• Adding a wildcard symbol may retrieve word variants: te sach hoc tap, nghien cua cong hoc nganh ((nong hoc) or (nong thon)) xa hoi dan phan va*.