Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"thu hoi canh snippets" » "thu hoi code snippets", "thu boi canh snippets", "thu doi canh snippets", "thu hoi danh snippets", "thu hoai canh snippets", "thu phoi canh snippets", "thu hai canh 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: (((("thu hoi canh snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu hoi canh snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( thu hoi canh snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu hoi canh snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.