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