Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"va trung low snippets" » "va trung code snippets", "va trung long snippets", "va truong lon snippets", "va truong lop snippets", "ba trung low snippets", "ha trung low snippets", "va thuong low snippets"
"using java java snippets" » "using data java snippets"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"va trung low snippets\") OR (\"using java java snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( va trung low snippets ) OR ( using java java snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("va trung low snippets") OR ("using java java snippets"))) OR ("locating bug core snippets"))*.