Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
theo dieu » theo tieu, theo chieu, thuoc dieu
hanh tram » hanh trang, thanh tran, thanh tra
hang cong » dang cong, hang nong, bang cong
hanh tam » thanh tam, nhanh tam, hanh lam
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo dieu hanh - ((hanh tram) or (hanh tam)) van ((nhung cong) OR (hang cong)) dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo dieu hanh - ((hanh tram) OR (hanh tam)) van ((nhung cong) OR (hang cong)) dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo dieu hanh - ((hanh tram) or (hanh tam)) van ((nhung cong) OR (hang cong)) dan toan cau".
• Adding a wildcard symbol may retrieve word variants: theo dieu hanh - ((hanh tram) or (hanh tam)) van ((nhung cong) OR (hang cong)) dan toan cau*.