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
toc hieu » toc thieu, doc hieu, thuc hieu
trung va » trang va, trung ha, trung tam
cong ban » cong bang, cong san, cong tan
ban phan » ban phap, van phan, ban than
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc hieu) or (hoc thieu)) manh - thanh ((trung va) OR (truong va)) nhung cong ban phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc hieu) OR (hoc thieu)) manh - thanh ((trung va) OR (truong va)) nhung cong ban phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc hieu) or (hoc thieu)) manh - thanh ((trung va) OR (truong va)) nhung cong ban phan dau".
• Adding a wildcard symbol may retrieve word variants: ((toc hieu) or (hoc thieu)) manh - thanh ((trung va) OR (truong va)) nhung cong ban phan dau*.