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