Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cham doi moi snippets" » "cham hoi moi snippets", "cham voi moi snippets", "pham doi moi snippets", "cham doi voi 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: (((("cham doi 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: (((("cham doi moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cham doi moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cham doi moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.