Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien danh
thien anh » thien danh, tien anh, thien thanh
thanh phi » thanh pho, thanh phan, thanh pham
van luong » van duong, van cuong, nang luong
luong bac » luong cac, phuong bac, luong va
bac phan » cac phan, bac thanh, bac thang
phi van » phi san, thi van, phi va
van van » van ban, tan van, san van

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) OR (thien anh)) - thanh phi van van luong bac phan tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (thien anh)) - thanh phi van van luong bac phan tu*".