Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dang tien do snippets" » "dang thien do snippets", "bang tien do snippets", "dong tien do snippets", "dang tien bo snippets", "dang bien do snippets", "dang tien dong 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: (((("dang tien do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang tien do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang tien do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang tien do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.