Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chung tac du snippets" » "chung ta du snippets", "chung cach du snippets", "chung than du snippets", "chung tac dau snippets", "chung cac du snippets", "chung tac da 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: (((("chung tac du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chung tac du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chung tac du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chung tac du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.