Perhaps you should try some spelling variations:
learning tony » learning tool, learning theory, learning tools
learning tom » learning tim, learning time, learning tool
yang amin » yang lin, yang mind
yang jin » yang jie, yang jun, ying jin
hong hai » shang hai, zhong tai, dang hai
h dan » h dean, _ dan, 1 dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((learning tony) or (learning tom)) h dan ((yang amin) OR (yang jin)) hong hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((learning tony) OR (learning tom)) h dan ((yang amin) OR (yang jin)) hong hai ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((learning tony) or (learning tom)) h dan ((yang amin) OR (yang jin)) hong hai ;*".