Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
khoa hoc » hoa hoc
van gian » van giang, dan gian, van giao
gian dan » gian lang
so sach » so sanh, bo sach, co sach
tu sach » thu sach, su sach, te sach
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
hai van » thai van, ha van, hai tan
hoc xa » hoc ma
xa hai » xa thai, xua hai, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) or (tu sach)) hoc tap, nghien cuu mot hoc nganh khoa hoc xa hai van gian dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (tu sach)) hoc tap, nghien cuu mot hoc nganh khoa hoc xa hai van gian dan.
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (tu sach)) hoc tap, nghien cuu mot hoc nganh khoa hoc xa hai van gian dan*.