Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tham su hoan snippets" » "tham du hoan snippets", "thap su hoan snippets", "tham su han snippets", "tham vu hoan snippets", "tham thu hoan 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: (((("tham su hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tham su hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tham su hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tham su hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.