Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tra mon canh snippets" » "tra mo canh snippets", "tra van canh snippets", "tra bo canh snippets", "tran mon canh 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: (((("tra mon canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tra mon canh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tra mon canh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tra mon canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.