Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bao van canh snippets" » "bao van anh snippets", "bao van hanh snippets", "bao van manh snippets", "dao van canh snippets", "cao van canh snippets", "hao van 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: (((("bao van 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: (((("bao van canh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bao van canh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bao van canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.