Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc tren doi snippets" » "duoc tren doi snippets", "dua tren doi snippets", "duc tien doi snippets", "duc tren moi snippets", "duc truyen doi snippets", "duc trong doi 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 ("duc tren doi snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("duc tren doi snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( duc tren doi snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("duc tren doi snippets"))) or ("locating bug code snippets"))*.