Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"thi van doan snippets" » "thi van code snippets", "thi van doanh snippets", "thi van toan snippets", "thi van hoan snippets", "thi lan doan snippets", "thi hanh doan snippets", "thi nang doan 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: (((("thi van doan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi van doan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( thi van doan snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi van doan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.