Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
sach hoi » sach doi, sach moi, cach thoi
cuu cong » cua cong, thu cong, cac cong
khoa hoc » hoa hoc
phan dau » phan tu, hang dau
su sach » so sach, vu sach
cuu mon » cuu mo, cuu mot, cuu tong
va phan » van phan, va phat, va phap
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 hoi dap, nghien ((cuu mon) or (cuu cong)) hoc nganh khoa hoc ma hoi va phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach hoi dap, nghien ((cuu mon) OR (cuu cong)) hoc nganh khoa hoc ma hoi va phan dau.
• Adding a wildcard symbol may retrieve word variants: su sach hoi dap, nghien ((cuu mon) or (cuu cong)) hoc nganh khoa hoc ma hoi va phan dau*.