Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"biet hang ca snippets" » "biet lang ca snippets", "viet hang ca snippets", "biet nhung ca snippets", "biet hang va snippets", "biet nang cao snippets", "biet hang tai 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: (((("biet hang ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("biet hang ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( biet hang ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("biet hang ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.