Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc hai chau snippets" » "doc lai chau snippets", "doc ha chau snippets", "doc hat chau snippets", "hoc hai chau snippets", "do hai chau snippets", "duc hai chau 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: (((("doc hai chau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doc hai chau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc hai chau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc hai chau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.