Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tat cao hoc snippets" » "tat cao code snippets", "tao cao hoc snippets", "tay cao hoc snippets", "tat bao hoc snippets", "tat co hoc snippets", "tat cho hoc snippets", "tat chat hoc 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: (((("tat cao hoc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tat cao hoc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( tat cao hoc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tat cao hoc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.