Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lam chat moi snippets" » "dam chat moi snippets", "luan chat moi snippets", "cao chat moi snippets", "lam nhat moi snippets", "lam thuat moi snippets", "lam cho 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: (((("lam chat 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: (((("lam chat moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lam chat moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lam chat moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.