Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
tranh va » tranh van, trang va, thanh va
trinh va » trinh van, trinh vat, trinh ve
pho cau » pho cap, pha cau, pho cam
ung » cung
dung » dcung

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 (trinh va)) ((ung dung) or (thong cong)) thanh pho cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - canh ((tranh va) OR (trinh va)) ((ung dung) OR (thong cong)) thanh pho cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - canh ((tranh va) OR (trinh va)) ((ung dung) or (thong cong)) thanh pho cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh ((tranh va) OR (trinh va)) ((ung dung) or (thong cong)) thanh pho cau*.