Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"son thanh co snippets" » "ban thanh co snippets", "van thanh co snippets", "son thanh do snippets", "son thanh ca snippets", "son thanh ho 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: (((("son thanh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("son thanh co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( son thanh co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("son thanh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.