Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"he cac tranh snippets" » "he cac thanh snippets", "he can tranh snippets", "he canh tranh snippets", "nhe cac tranh snippets", "ve cac tranh snippets", "he bac tranh 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: (((("he cac tranh snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("he cac tranh snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( he cac tranh snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("he cac tranh snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.