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