Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"son tac can snippets" » "so tac can snippets", "son bac can snippets", "cong tac can snippets", "son tac van snippets", "son tac quan snippets", "son tac vang 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: (((("son tac can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("son tac can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( son tac can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("son tac can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.