Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hien xanh » hien hanh, hien nhanh, chieu xanh
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
dan nhan » danh nhan, van nhan, dac nhan
ban nhan » ban than, van nhan, ban thanh
dan chan » dan gian, dan ca, van chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - canh tranh cua thong cong ((((dan nhan) OR (ban nhan))) or (dan chan)) cach~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - canh tranh cua thong cong ((((dan nhan) OR (ban nhan))) OR (dan chan)) cach.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - canh tranh cua thong cong ((((dan nhan) OR (ban nhan))) or (dan chan)) cach".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - canh tranh cua thong cong ((((dan nhan) OR (ban nhan))) or (dan chan)) cach*.