Perhaps you should try some spelling variations:
nghien tach » nghiep sach, nghiem sach, nghiep thanh
nghiep cach » nghiep sach, nghiep cay, nghiep bac
thong manh » thong minh, thong mang, thong danh
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
manh toan » thanh toan, anh tuan, tinh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((nghien tach) or (nghiep cach)) - canh tranh cua thong thong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((nghien tach) OR (nghiep cach)) - canh tranh cua thong thong manh toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((nghien tach) or (nghiep cach)) - canh tranh cua thong thong manh toan ban*.