Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
cong toan » cong tan, cong hoan, cong tuan
doanh hoa » doanh khoa, doanh hoan, danh hoa
sach hoi » sach doi, sach moi, cach thoi
chu phan » chau phan, cho phan, chu han
phan van » pham van, thanh van, luan van
te sach » toc sach
hoi tap » hoi dap, hoc tap, hoi tai
mai hoi » mai khoi, dai hoi, lai hoi
ma hoi » xa hoi, ma hoa, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach hoi tap, nghien thu cong toan doanh hoa hoc ((ma hoi) OR (mai hoi)) chu phan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach hoi tap, nghien thu cong toan doanh hoa hoc ((ma hoi) OR (mai hoi)) chu phan van".
• Adding a wildcard symbol may retrieve word variants: te sach hoi tap, nghien thu cong toan doanh hoa hoc ((ma hoi) OR (mai hoi)) chu phan van*.