Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc chiet » hoc thiet, hoc hien, hoc viet
hoc nhiet » hoc thiet, hoc nghien, hoc hien
cua nhung » va nhung
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
canh ban » canh dan, canh van, doanh ban
toan ban » van ban
can 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 chiet) or (hoc nhiet)) tach - ((canh ban) OR (can ban)) cua nhung cong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chiet) OR (hoc nhiet)) tach - ((canh ban) OR (can ban)) cua nhung cong manh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chiet) or (hoc nhiet)) tach - ((canh ban) OR (can ban)) cua nhung cong manh toan ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc chiet) or (hoc nhiet)) tach - ((canh ban) OR (can ban)) cua nhung cong manh toan ban*.