Perhaps you should try some spelling variations:
nganh nong » nganh cong
hoc nganh » hoc nhanh
van nhan » van phan, van thanh, danh nhan
nhan van » nhan dan, nhan va, phan van
te mach » ke mach, tim mach, tao mach
te sach » toc sach
thon xa » thong xa, thoi xa, thong xay
hoi van » hoi va, hoi dan, hai van
mo hoc » mon hoc, co hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te mach) OR (te sach)) hoc tap, nghien cuu mo hoc nganh nong thon xa hoi van nhan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te mach) OR (te sach)) hoc tap, nghien cuu mo hoc nganh nong thon xa hoi van nhan van".
• Adding a wildcard symbol may retrieve word variants: ((te mach) OR (te sach)) hoc tap, nghien cuu mo hoc nganh nong thon xa hoi van nhan van*.