Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tra mo canh snippets" » "tra bo canh snippets", "tra do canh snippets", "tra mo danh snippets", "tra mon canh snippets", "ta mo canh snippets", "tra my 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 mo 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 mo canh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tra mo canh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tra mo canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.