Perhaps you should try some spelling variations:
cong luong » cong thuong, nang luong, cong dong
duoc lieu » du lieu
hoang van » hang va
van nhung » van nhuong, va nhung, van hung
cong vang » cong lang, cong quang, cong ngang
doi lieu » doi chieu, du lieu, tai lieu
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: ((doi lieu) OR (duoc lieu)) tinh - tnhh hoang van nhung ((cong vang) or (cong luong)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi lieu) OR (duoc lieu)) tinh - tnhh hoang van nhung ((cong vang) OR (cong luong)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi lieu) OR (duoc lieu)) tinh - tnhh hoang van nhung ((cong vang) or (cong luong)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ((doi lieu) OR (duoc lieu)) tinh - tnhh hoang van nhung ((cong vang) or (cong luong)) toan cao*.