Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cao van toan snippets" » "cao van code snippets", "cao van tuan snippets", "cao van tan snippets", "cao van thanh snippets", "cac van toan snippets", "dao van toan snippets", "cao dang toan snippets"
"python using java snippets" » "python using data snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("cao van toan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"cao van toan snippets\") OR (\"python using java snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( cao van toan snippets ) OR ( python using java snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao van toan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets"))*.