Perhaps you should try some spelling variations:
lanh manh » lanh tranh, lan anh, van manh
dong cong » duong cong, dung cong, dang cong
van thang » van thanh, van khang, van hang
doc hieu » hoc thieu, hoc hien
manh cua » doanh cua, ban cua
cua dong » chua dong, cua cong, cua dang
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) OR (toc thieu)) xanh - lanh manh cua dong cong ((dan than) or (van thang)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) xanh - lanh manh cua dong cong ((dan than) OR (van thang)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) OR (toc thieu)) xanh - lanh manh cua dong cong ((dan than) or (van thang)) ban".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) OR (toc thieu)) xanh - lanh manh cua dong cong ((dan than) or (van thang)) ban*.