Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hien xanh » hien hanh, hien nhanh, chieu xanh
cong dung » cuong dung, cong dong, cong luong
minh vat » sinh vat, dinh vat, tinh vat
dung cac » luong cac, dung cho, dung tai
minh va » tinh va, sinh va, sinh vat
cac cau » cac mau, bac cau, ca cau

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 - nhan ((minh vat) OR (minh va)) nhung cong dung cac cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - nhan ((minh vat) OR (minh va)) nhung cong dung cac cau".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - nhan ((minh vat) OR (minh va)) nhung cong dung cac cau*.