Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kiet tac can snippets" » "kien mac can snippets", "viet ta can snippets", "viet tay can snippets", "kiet tac van snippets", "kiet tac quan snippets", "kiet 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: (((("kiet 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: (((("kiet tac can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kiet tac can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kiet tac can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.