Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"moi thi cham snippets" » "moi thi hai snippets", "moi toc cham snippets", "moi thi ha snippets", "moi thoi cham snippets", "hoi thi cham snippets", "moi tai cham snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("moi thi cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("moi thi cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( moi thi cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("moi thi cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.