Perhaps you should try some spelling variations:
thong khoa » tuong khoa, hong khoa, phong khoa
hoc nganh » hoc nhanh
khong hoc » khung hoc, thong hoc, khong thuoc
mach hoc » cach hoc, dich hoc, anh hoc
phap dan » phap day, phap han, phap van
so mach » so sach, tao mach, kon mach
hoi ban » hoi dan, hoi bai, doi ban
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: so mach hoc tap, nghien cuu mo hoc nganh ((khong hoc) or (thong khoa)) xa hoi ban phap dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so mach hoc tap, nghien cuu mo hoc nganh ((khong hoc) OR (thong khoa)) xa hoi ban phap dan.
• Adding a wildcard symbol may retrieve word variants: so mach hoc tap, nghien cuu mo hoc nganh ((khong hoc) or (thong khoa)) xa hoi ban phap dan*.