Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chung vi moi snippets" » "chung cu moi snippets", "chung tu moi snippets", "hung v moi snippets", "chung vi mo snippets", "chung ve moi snippets", "chung va moi 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 vi moi 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 vi moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chung vi moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chung vi moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.