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