Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
nhanh mang » nhanh lang, hanh mang, nhanh quang
nhung dung » phuong dung, ung dung, trung dung
thong dung » thong cong, thong thuong
hanh tang » hanh trang, anh tang, hanh mang
manh toan » thanh toan, anh tuan, tinh toan
toan cao » toan ban, toan tap

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 tang) or (nhanh mang)) va ((nhung dung) OR (thong dung)) manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu xanh - ((hanh tang) OR (nhanh mang)) va ((nhung dung) OR (thong dung)) manh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc thieu xanh - ((hanh tang) or (nhanh mang)) va ((nhung dung) OR (thong dung)) manh toan cao".
• Adding a wildcard symbol may retrieve word variants: toc thieu xanh - ((hanh tang) or (nhanh mang)) va ((nhung dung) OR (thong dung)) manh toan cao*.