Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hien tinh » khien tinh, thien tinh, bien tinh
truong va » truong dai, truong cao, truong dao
trung hoc » trung quoc
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, 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 hien tinh - hanh ((((truong va) or (trung tam))) or (trung hoc)) nhung cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tinh - hanh ((((truong va) OR (trung tam))) OR (trung hoc)) nhung cong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien tinh - hanh ((((truong va) or (trung tam))) or (trung hoc)) nhung cong dan toan cau*.