Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
phuong van » phung van, phong van, phuong lan
hieu manh » chieu xanh, hieu nganh, dieu hanh
van nhanh » van thanh, van hanh, van khanh
nhanh cau » nhanh cay, thanh chau, nhanh ha
hoang va » hoang van, hoang ha, hoang vu

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 (hieu manh)) - thanh ((hoang va) or (hang va)) bang phuong van nhanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - thanh ((hoang va) OR (hang va)) bang phuong van nhanh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (hieu manh)) - thanh ((hoang va) or (hang va)) bang phuong van nhanh cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (hieu manh)) - thanh ((hoang va) or (hang va)) bang phuong van nhanh cau*.