Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
cong thanh » dong thanh, cong trinh, cong tan
cuong danh » cuon danh, huong dan, cuong linh
hoc thieu » toc thieu, hoc hien
trung va » truong va, trang va, trung tam
trung ha » trung hoc, trung tam, trung cap
toan ban » van ban

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 - thanh ((trung va) OR (trung ha)) trong ((cong thanh) or (cuong danh)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh ((trung va) OR (trung ha)) trong ((cong thanh) OR (cuong danh)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh ((trung va) OR (trung ha)) trong ((cong thanh) or (cuong danh)) toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((trung va) OR (trung ha)) trong ((cong thanh) or (cuong danh)) toan ban*.