Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tri moi doc snippets" » "tri mot doc snippets", "thi moi doc snippets", "tri doi doc snippets", "tri moi doi snippets", "tri moi loc 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: (((("tri moi doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tri moi doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tri moi doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tri moi doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.