Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhat van loc snippets" » "nhat ban loc snippets", "nha van loc snippets", "nhan van loc snippets", "nhat van hoc snippets", "nhat van loi snippets", "nhat 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: (((("nhat 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: (((("nhat van loc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhat van loc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhat van loc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.