Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
nhanh mang » nhanh lang, nhanh quang, nhanh thang
hanh mang » hanh trang, nhanh lang, thanh hang
ban cong » bang cong, van cong, phan cong
cong tac » cong ty
tac tren » rac tren, tai tren, tap tren
tren cau » tren ca, tren cay, tren tau

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 - ((((hanh mang) OR (nhanh mang))) or (canh tranh)) cua ban cong tac tren cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu xanh - ((((hanh mang) OR (nhanh mang))) OR (canh tranh)) cua ban cong tac tren cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc thieu xanh - ((((hanh mang) OR (nhanh mang))) or (canh tranh)) cua ban cong tac tren cau".
• Adding a wildcard symbol may retrieve word variants: toc thieu xanh - ((((hanh mang) OR (nhanh mang))) or (canh tranh)) cua ban cong tac tren cau*.