Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
sach moi » sach doi, sach hoi, bach mai
cuu tong » cuu tinh, huu tung, cuu nang
cuu cong » cua cong, thu cong, cac cong
khoa hoc » hoa hoc
gian dan » gian lang
su sach » so sach, vu sach
moi dap » hoi dap, doi dap, moi dan
va gian » va gianh, van gian, va giai
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach moi dap, nghien ((cuu tong) or (cuu cong)) hoc nganh khoa hoc ma hoi va gian dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach moi dap, nghien ((cuu tong) OR (cuu cong)) hoc nganh khoa hoc ma hoi va gian dan.
• Adding a wildcard symbol may retrieve word variants: su sach moi dap, nghien ((cuu tong) or (cuu cong)) hoc nganh khoa hoc ma hoi va gian dan*.