Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thanh tran » thanh trang, thanh tra, thanh tuan
thanh toan » thanh hoa, thanh san, tinh toan
hoc thieu » toc thieu, hoc hien
bang cong » dang cong, bang song, hang cong
van bang » van ban, van nang, von bang
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
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 thieu xanh - ((thanh tran) OR (thanh toan)) van bang cong tap toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - ((thanh tran) OR (thanh toan)) van bang cong tap toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((thanh tran) OR (thanh toan)) van bang cong tap toan cao*.