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