Perhaps you should try some spelling variations:
doanh hoan » doanh doanh, doanh khoa, doanh nhan
hoa doanh » toan doanh, hoa dan
toc sach » hoc sach, doc sach, thuoc sach
sach dao » lanh dao
cuu cong » cua cong, thu cong, cac cong
cong hoa » dong hoa, dong hoc, hang hoa
hoan hoc » hoa hoc, toan hoc, hoang hoa
phap dau » phan dau, phap day, pham dau
dao tap » dao tao, dao tay, dao gap
mai hoi » mai khoi, dai hoi, lai hoi
va phap » va phat, ban phap
me hoi » le 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 tap, nghien cuu cong hoa doanh hoan hoc ((me hoi) or (mai hoi)) va phap dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach dao tap, nghien cuu cong hoa doanh hoan hoc ((me hoi) OR (mai hoi)) va phap dau.
• Adding a wildcard symbol may retrieve word variants: toc sach dao tap, nghien cuu cong hoa doanh hoan hoc ((me hoi) or (mai hoi)) va phap dau*.