Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
tuan nhung » quan nhung, tuan hung, thuat nhung
hien xanh » hien hanh, hien nhanh, chieu xanh
thanh tra » thanh hoa
cong van » cong vang, song van, cong tan
cong san » cong tac
than cau » toan cau, phan cau, than cap

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 - ((thanh tra) or (thanh toan)) tuan nhung ((cong van) OR (cong san)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - ((thanh tra) OR (thanh toan)) tuan nhung ((cong van) OR (cong san)) than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - ((thanh tra) or (thanh toan)) tuan nhung ((cong van) OR (cong san)) than cau".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - ((thanh tra) or (thanh toan)) tuan nhung ((cong van) OR (cong san)) than cau*.