Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
tieu hanh » dieu hanh, tiem hanh, tien hanh
hanh tung » thanh tung, manh tung, hanh dung
hanh mang » nhanh mang, hanh trang, nhanh lang
dung cong » dung trong
dan toan » van toan, dan than, manh toan
toan tap » toan ban

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

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