Perhaps you should try some spelling variations:
quyen tao » tuyen tap, luyen tap, quyen so
quyet tao » quyet tam, quyet tan, quyet toan
cong dung » cuong dung, cong dong, cong luong
anh thuc » am thuc, dan thuc, anh tu
thi cong » tai cong, thien cong
y thi » ky thi, y thai, ly thi
va y » va ky, va my, vat y

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((quyen tao) or (quyet tao)) anh thuc đe co ban va y thi cong dung~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((quyen tao) OR (quyet tao)) anh thuc đe co ban va y thi cong dung*.