Perhaps you should try some spelling variations:
thuoc nganh » thuong nganh, hoc nganh, chuc nganh
cong thuoc » cong thuc, dong thuoc, long thuoc
nganh hoa » thanh hoa, khanh hoa, danh hoa
sach hoi » sach doi, sach moi, cach thoi
cuu cong » cua cong, thu cong, cac cong
hoa phan » co phan
phan van » pham van, thanh van, luan van
tu sach » thu sach, su sach, te sach
hoi tap » hoi dap, hoc tap, hoi tai

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 hoi tap, nghien cuu cong thuoc nganh hoa hoc ma ((hoa phan) or (hoa dan)) phan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoi tap, nghien cuu cong thuoc nganh hoa hoc ma ((hoa phan) OR (hoa dan)) phan van.
• Adding a wildcard symbol may retrieve word variants: tu sach hoi tap, nghien cuu cong thuoc nganh hoa hoc ma ((hoa phan) or (hoa dan)) phan van*.