Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van luc chi snippets" » "van luc code snippets", "van loc chi snippets", "van duc chi snippets", "van lu chi snippets", "van luc thi snippets", "van luc cho snippets", "van luan chi 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: (((("van luc chi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van luc chi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van luc chi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van luc chi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.