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