Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"sam anh toan snippets" » "sam anh code snippets", "sam manh toan snippets", "sam anh tuan snippets", "sam thanh toan snippets", "sat anh toan snippets", "tam anh toan snippets", "am anh toan snippets"
"python using java snippets" » "python using data 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: (((("sam anh toan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sam anh toan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( sam anh toan snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sam anh toan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.