Perhaps you should try some spelling variations:
ngan danh » ngan hang, ngan sach, nhan dan
toc sach » hoc sach, doc sach, thuoc sach
sach dao » lanh dao
cuu cong » cua cong, thu cong, cac cong
cong coc » cong cuoc, cong cac, cong co
coc phan » co phan, hoc phan, cac phan
phan hoa » phan loai, phan phoi, phan hong
ngan dan » nhan dan, ngan han, ngan van
dao tai » dao thai, dao tao, cao tai
hoc mai » hoc ma, hoc dai, hoc bai
mai hoi » mai khoi, dai hoi, lai hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach dao tai, nghien cuu cong coc phan hoa hoc mai hoi chuc ((ngan dan) OR (ngan danh))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach dao tai, nghien cuu cong coc phan hoa hoc mai hoi chuc ((ngan dan) OR (ngan danh))".
• Adding a wildcard symbol may retrieve word variants: toc sach dao tai, nghien cuu cong coc phan hoa hoc mai hoi chuc ((ngan dan) OR (ngan danh))*.