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