Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chu xuan ho snippets" » "chu quang ho snippets", "chuc quan ho snippets", "thi xuan ho snippets", "chu xuan ha snippets", "chu xuan huy snippets", "chu xuan thu 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: (((("chu xuan ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chu xuan ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chu xuan ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chu xuan ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.