Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
trinh han » trinh quan
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
chan cau » phan cau, chinh cau, nhanh cau
can cau » van cau, ban cau, ca cau
han va » hang va, hanh va, nhan va

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 - trinh han va ((hang cong) OR (dang cong)) dan ((chan cau) or (can cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - trinh han va ((hang cong) OR (dang cong)) dan ((chan cau) OR (can cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - trinh han va ((hang cong) OR (dang cong)) dan ((chan cau) or (can cau))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - trinh han va ((hang cong) OR (dang cong)) dan ((chan cau) or (can cau))*.