Perhaps you should try some spelling variations:
luong theo » luong thi
nganh khoa » nganh khong, doanh khoa, anh khoa
cuu luong » cuu long, cu luong, cuu tuong
nganh hoa » thanh hoa, khanh hoa, danh hoa
sach hoc » cach hoc, sach hoi, mach hoc
phan van » pham van, thanh van, luan van
tu sach » thu sach, su sach, te sach
va phan » van phan, va phat, va phap
hoc xa » hoc ma

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

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