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