Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
truong va » truong dai, truong cao, truong dao
dung cong » dung trong
trung va » trang va, trung ha, trung cap
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu tinh - hanh ((((trung va) OR (trung tam))) or (truong va)) dung cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu tinh - hanh ((((trung va) OR (trung tam))) OR (truong va)) dung cong dan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu tinh - hanh ((((trung va) OR (trung tam))) or (truong va)) dung cong dan than cao".
• Adding a wildcard symbol may retrieve word variants: hoc chieu tinh - hanh ((((trung va) OR (trung tam))) or (truong va)) dung cong dan than cao*.