Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi van doi snippets" » "thi lan doi snippets", "thi hanh doi snippets", "thi nang doi snippets", "thi van loi snippets", "thi van noi snippets", "thi van do 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: (((("thi van 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: (((("thi van doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi van doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi van doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.