Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"xuan minh o2 snippets" » "xuan minh code snippets", "xuan dinh o2 snippets", "xuan kinh o2 snippets", "quang minh o2 snippets", "xuan minh hoa snippets", "xuan minh son snippets", "xuan minh hon 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: (((("xuan minh o2 snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xuan minh o2 snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( xuan minh o2 snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xuan minh o2 snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.