Perhaps you should try some spelling variations:
cong luong » cong thuong, nang luong, cong dong
cach tieu » sach thieu, cach bien, cach tu
tuyen tai » truyen tai, tuyen tap, xuyen tai
cac khu » cac thu, cac khoi, cac kieu
cac che » cac he, cac chien, cac chat
ve ky » va ky, ke ky
ve y » ve _, ke y, te y

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

• Performing a fuzzy search may retrieve terms with similar spellings: tuyen tai ((((cac khu) or (cach tieu))) or (cac che)) đe co ban ((ve y) OR (ve ky)) thu cong luong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tuyen tai ((((cac khu) OR (cach tieu))) OR (cac che)) đe co ban ((ve y) OR (ve ky)) thu cong luong*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tuyen tai ((((cac khu) or (cach tieu))) or (cac che)) đe co ban ((ve y) OR (ve ky)) thu cong luong*".