Perhaps you should try some spelling variations:
cong luong » cong thuong, nang luong, cong dong
lieu tinh » trieu tinh, diep tinh, bien tinh
hoang van » hang va
van nhung » van nhuong, va nhung, van hung
cong vang » cong lang, cong quang, cong ngang
doi lieu » duoc lieu, doi chieu, du lieu
toan cao » toan tap
toan ban » van ban

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 tinh - tnhh hoang van nhung ((cong vang) or (cong luong)) ((toan cao) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi lieu tinh - tnhh hoang van nhung ((cong vang) OR (cong luong)) ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi lieu tinh - tnhh hoang van nhung ((cong vang) or (cong luong)) ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: doi lieu tinh - tnhh hoang van nhung ((cong vang) or (cong luong)) ((toan cao) OR (toan ban))*.