Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"son kinh doc snippets" » "von kinh doc snippets", "mon kinh doc snippets", "son binh doc snippets", "son kinh hoc snippets", "son dinh doc snippets", "son kinh do 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 kinh doc 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 kinh doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( son kinh doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("son kinh doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.