Perhaps you should try some spelling variations:
nghien huu » nghien cuu, nguyen huu, nhiem huu
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
toc sach » hoc sach, doc sach, thuoc sach
tung hoc » trung hoc, tuong hoc, dung hoc
khoa hoc » hoa hoc
moi tap » moi tai, toi tap
hoi gia » ho gia, hoc gia, hoa gia
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: ((te sach) OR (toc sach)) moi tap, nghien huu tung hoc nganh khoa hoc xa hoi gia thanh san~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) moi tap, nghien huu tung hoc nganh khoa hoc xa hoi gia thanh san".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) moi tap, nghien huu tung hoc nganh khoa hoc xa hoi gia thanh san*.