Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"biet hat doi snippets" » "biet nhat doi snippets", "biet thoat doi snippets", "tiet nhat doi snippets", "biet hoat doi snippets", "biet thay doi snippets", "biet hang doi 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 hat doi 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 hat doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( biet hat doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("biet hat doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.