Perhaps you should try some spelling variations:
phan phoi » phan thi
chuc ngan » chuc nganh, chuc nang, cua ngan
cuu cong » cua cong, thu cong, cac cong
cong coc » cong cuoc, cong cac, cong co
coc phan » co phan, hoc phan, cac phan
phoi hoc » hoi hoc, phoi thuoc, hoa hoc
ngan dan » ngan danh, nhan dan, ngan han
anh dao » hanh dao, anh dat, doanh dao
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: hoc ((anh dao) or (lanh dao)) tai, nghien cuu cong coc phan phoi hoc mai hoi chuc ngan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((anh dao) OR (lanh dao)) tai, nghien cuu cong coc phan phoi hoc mai hoi chuc ngan dan.
• Adding a wildcard symbol may retrieve word variants: hoc ((anh dao) or (lanh dao)) tai, nghien cuu cong coc phan phoi hoc mai hoi chuc ngan dan*.