Perhaps you should try some spelling variations:
"vi trinh code snippets" » "vi trinh cong snippets", "vi trinh co snippets", "vi trinh cad snippets", "vi tinh code snippets", "va trinh code snippets", "viet trinh code snippets"
"using java java snippets" » "using data java snippets"
"locating bug core snippets" » "locating bug code snippets"

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

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