Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
thieu lang » hieu lang, thieu quang, chieu sang
truong va » truong dai, truong cao, truong dao
dang cong » dung cong
trung va » trang va, trung ha, trung tam
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cau » toan cao, toan ban, toan tap

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