Perhaps you should try some spelling variations:
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » nhanh mang, hanh trang, nhanh lang
dung cong » dung trong
hoc dieu » hoc thieu
cua dung » cua dang, cua dong, qua dung
cong san » cong tac
san than » sang than, san thanh, ban than
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc dieu) or (hoc hien)) minh - ((hanh tang) OR (hanh mang)) cua dung cong san than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc dieu) OR (hoc hien)) minh - ((hanh tang) OR (hanh mang)) cua dung cong san than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc dieu) or (hoc hien)) minh - ((hanh tang) OR (hanh mang)) cua dung cong san than cap".
• Adding a wildcard symbol may retrieve word variants: ((hoc dieu) or (hoc hien)) minh - ((hanh tang) OR (hanh mang)) cua dung cong san than cap*.