Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
nhung cong » dung cong, thong cong, nhung don
hang cong » dang cong, hang nong, bang cong
trinh va » trinh van, trinh vat, trinh vi
trinh ve » trinh he, trinh vi, trinh viet
sat phan » sat nhan, vat phan, xuat phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu xanh - canh ((trinh va) or (trinh ve)) ((nhung cong) OR (hang cong)) sat phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu xanh - canh ((trinh va) OR (trinh ve)) ((nhung cong) OR (hang cong)) sat phan tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc thieu xanh - canh ((trinh va) or (trinh ve)) ((nhung cong) OR (hang cong)) sat phan tu*".