Perhaps you should try some spelling variations:
truong thanh » truong thpt, truong chung
truong trung » tieng trung
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
dang cong » dung cong
cong dan » cong san, cong tan, huong dan
chan tap » han tap, phan tap, toan tap
chan ta » chan tha, nhan tai, nhan tao

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