Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tam anh so snippets" » "tuan anh so snippets", "pham anh so snippets", "tam linh so snippets", "tam anh son snippets", "tam anh co 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: (((("tam anh 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: (((("tam anh so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tam anh so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tam anh so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.