Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
luan nhung » luan chung, luan hung, quan nhung
hien xanh » hien hanh, hien nhanh, chieu xanh
cach dung » sach dung, tac dung, anh dung
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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 - ((cach dung) or (cach mang)) luan nhung cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - ((cach dung) OR (cach mang)) luan nhung cong tan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - ((cach dung) or (cach mang)) luan nhung cong tan toan cau*.