Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
toc sach » hoc sach, doc sach, thuoc sach
sach hoc » cach hoc, sach hoi, mach hoc
khoa hoc » hoa hoc
phap han » phap phan, phap nang, phap phat
mo hoc » mon hoc, co hoc
hoc xa » hoc ma
hoan » hoang, hoa, toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach hoc tap, nghien cuu mo hoc nganh khoa hoc xa hoi va ((phap han) OR (phap hoan))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach hoc tap, nghien cuu mo hoc nganh khoa hoc xa hoi va ((phap han) OR (phap hoan))".
• Adding a wildcard symbol may retrieve word variants: toc sach hoc tap, nghien cuu mo hoc nganh khoa hoc xa hoi va ((phap han) OR (phap hoan))*.