Perhaps you should try some spelling variations:
cong luong » cong thuong, nang luong, cong dong
cong dung » cuong dung, cong dong, thong dung
tap tuc » tap suc, tap trac
tuc cua » thuc cua, tac cua, luc cua
co ben » co benh, co ban, do ben
ky thu » ly thu, ky thi, ky thuat
y thu » ly thu, y thuc, _ thu
tuyen » truyen, quyen

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

• Performing a fuzzy search may retrieve terms with similar spellings: tuyen tap tuc cua đe co ben vat ((y thu) or (ky thu)) ((cong dung) OR (cong luong))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tuyen tap tuc cua đe co ben vat ((y thu) OR (ky thu)) ((cong dung) OR (cong luong)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tuyen tap tuc cua đe co ben vat ((y thu) or (ky thu)) ((cong dung) OR (cong luong))".
• Adding a wildcard symbol may retrieve word variants: tuyen tap tuc cua đe co ben vat ((y thu) or (ky thu)) ((cong dung) OR (cong luong))*.