Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
hanh hang » thanh hang, hang hang, hanh han
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, mot chieu
hang cua » mang cua, hang ca, huong cua
cong tac » cong ty
han tap » han tai, toan tap, nhan tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (doi chieu)) tinh - hanh hang cua nhung ((cong san) or (cong tac)) han tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) tinh - hanh hang cua nhung ((cong san) OR (cong tac)) han tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) tinh - hanh hang cua nhung ((cong san) or (cong tac)) han tap".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) tinh - hanh hang cua nhung ((cong san) or (cong tac)) han tap*.