Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
truong cao » truong dai
xuan hoang » quan hoang, tuan hoang, luan hoan
hoc thieu » toc thieu, hoc hien
trung cap » trung tam
cong san » cong tac
tuan ban » tuan bang, toan ban, luan 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 - hanh ((trung cap) OR (truong cao)) trong cong san ((tuan ban) or (xuan hoang))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh ((trung cap) OR (truong cao)) trong cong san ((tuan ban) OR (xuan hoang)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh ((trung cap) OR (truong cao)) trong cong san ((tuan ban) or (xuan hoang))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh ((trung cap) OR (truong cao)) trong cong san ((tuan ban) or (xuan hoang))*.