Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"thi toan ho snippets" » "thi toan code snippets", "thi tran ho snippets", "thi hoan ho snippets", "thi loan ho snippets", "thi toan hoc snippets", "thi toan khoa snippets", "thi toan cao 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 toan ho 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 toan ho snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( thi toan ho snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi toan ho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.