Perhaps you should try some spelling variations:
thieu danh » tieu danh, chieu xanh, dieu danh
thien danh » thien anh, thien dang, thien thanh
thanh hang » thanh hoang, thanh thang, tranh hang
nang cong » nang song, dang cong, bang cong
manh toan » thanh toan, anh tuan, tinh toan
hang van » hoang van, hang va, dang van
van nang » van quang, van ban, van dong
dan toan » van toan, dan than, xuan toan

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 danh) OR (thien danh)) - thanh hang van nang cong ((dan toan) or (manh toan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu danh) OR (thien danh)) - thanh hang van nang cong ((dan toan) OR (manh toan)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu danh) OR (thien danh)) - thanh hang van nang cong ((dan toan) or (manh toan)) tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu danh) OR (thien danh)) - thanh hang van nang cong ((dan toan) or (manh toan)) tap*.