Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"man dan canh snippets" » "man van canh snippets", "man dan cach snippets", "man dan hanh snippets", "ban dan canh snippets", "van dan canh snippets", "mat dan 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: (((("man dan 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: (((("man dan canh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( man dan canh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("man dan canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.