Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tham dung do snippets" » "tham dung code snippets", "pham dung do snippets", "tham cung do snippets", "tham nhung do snippets", "tham dung doi snippets", "tham dung co snippets", "tham dung de snippets"
"python using java snippets" » "python using data 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: (((("tham dung do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tham dung do snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( tham dung do snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tham dung do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.