Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hien xanh » hien hanh, hien nhanh, chieu xanh
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan cau » toan cao, toan ban, toan tap
tuan va » luan va, quan va, than va
toan va » doan va, tran van, toan ban

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