Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
hang nong » thang long, han tong
tranh va » tranh van, trinh va, thanh va
trang va » tran van, hang va
nong tac » cong tac, dong tac, nong tan
phan dau » 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: hoc thieu xanh - canh ((tranh va) OR (trang va)) hang nong tac ((phan dau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - canh ((tranh va) OR (trang va)) hang nong tac ((phan dau) OR (phan tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - canh ((tranh va) OR (trang va)) hang nong tac ((phan dau) or (phan tu))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh ((tranh va) OR (trang va)) hang nong tac ((phan dau) or (phan tu))*.