Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu hai moi snippets" » "thu ha moi snippets", "thu nhap moi snippets", "thu hang moi snippets", "thu hai muoi snippets", "thu dai moi snippets", "thu nhat moi 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: (((("thu hai moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu hai moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu hai moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu hai moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.