Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"thi doan son snippets" » "thi doan code snippets", "thai doan son snippets", "thi hoan son snippets", "thi loan son snippets", "thi hoang son snippets", "thi doan sinh snippets", "thi hoanh son 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 doan son 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 doan son snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( thi doan son snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi doan son snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.