Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cac vu hoan snippets" » "cac vu code snippets", "cac vu hoang snippets", "cac su hoan snippets", "cac thu hoan snippets", "cac du hoan snippets", "cac vi hoan snippets", "cac tu hoan 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: (((("cac vu hoan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cac vu hoan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cac vu hoan snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac vu hoan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.