Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bac khoa can snippets" » "bach khoa can snippets", "dac khoa can snippets", "ba khoa can snippets", "bac khoa cam snippets", "bac khoa cap snippets", "bac khoi can 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: (((("bac khoa 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: (((("bac khoa can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bac khoa can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bac khoa can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.