Perhaps you should try some spelling variations:
thiet danh » thien danh, thien anh, thien dang
hanh trang » thanh trung, canh tranh, minh trang
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
dan toan » van toan, dan than, manh toan
ban than » ban thanh, van thanh, ban hang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet danh - ((hanh trang) or (hanh trinh)) va nhung cong ((dan toan) or (ban than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet danh - ((hanh trang) OR (hanh trinh)) va nhung cong ((dan toan) OR (ban than)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc thiet danh - ((hanh trang) or (hanh trinh)) va nhung cong ((dan toan) or (ban than)) cau*.