Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
truong va » truong dai, truong cao, truong dao
trung va » trang va, trung ha, trung tam
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
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) or (theo tieu)) tinh - thanh ((trung va) OR (truong va)) nhung cong tap toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (theo tieu)) tinh - thanh ((trung va) OR (truong va)) nhung cong tap toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (theo tieu)) tinh - thanh ((trung va) OR (truong va)) nhung cong tap toan cao".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (theo tieu)) tinh - thanh ((trung va) OR (truong va)) nhung cong tap toan cao*.