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