Perhaps you should try some spelling variations:
thanh tang » thanh thang, thanh trang, thanh tung
hang cong » dang cong, hang nong, bang cong
thanh tap » thanh tai, thanh tay, thanh tam
thanh lap » thanh san, phan lap, thanh hai
tang van » dang van, hoang van, trong van
van hang » van khang, van hoang, van thang
cong ban » cong bang, cong san, cong tan

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) OR (theo tieu)) xanh - thanh tang van hang cong ban ((thanh tap) OR (thanh lap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hien) OR (theo tieu)) xanh - thanh tang van hang cong ban ((thanh tap) OR (thanh lap))".
• Adding a wildcard symbol may retrieve word variants: ((hoc hien) OR (theo tieu)) xanh - thanh tang van hang cong ban ((thanh tap) OR (thanh lap))*.