Perhaps you should try some spelling variations:
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
nhung don » nhung van, nhung bo
hang cong » dang cong, hang nong, bang cong
chu manh » ho manh, chu van, thu minh
tinh cua » trinh cua, sinh cua, tinh chat
tac toan » tap toan, tam toan, hach toan
toan ban » van ban
chu han » chu van

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu manh) or (chu han)) - hanh tinh cua ((nhung don) or (hang cong)) tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu manh) OR (chu han)) - hanh tinh cua ((nhung don) OR (hang cong)) tac toan ban.
• Adding a wildcard symbol may retrieve word variants: theo ((chu manh) or (chu han)) - hanh tinh cua ((nhung don) or (hang cong)) tac toan ban*.