Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tac den coi snippets" » "tac de coi snippets", "tat den coi snippets", "thai den coi snippets", "tac den voi snippets", "tac den cong 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: (((("tac den coi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tac den coi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tac den coi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tac den coi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.