Perhaps you should try some spelling variations:
nhung luong » hung luong, nhung huong, nhung tuong
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh toan » thanh hoa, thanh san, tinh toan
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » nhanh mang, hanh trang, nhanh lang
cua nhung » va nhung
bai toan » bai tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu xanh - ((hanh tang) OR (hanh mang)) cua nhung luong ((thanh toan) or (bai toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - ((hanh tang) OR (hanh mang)) cua nhung luong ((thanh toan) OR (bai toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - ((hanh tang) OR (hanh mang)) cua nhung luong ((thanh toan) or (bai toan)) cau".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - ((hanh tang) OR (hanh mang)) cua nhung luong ((thanh toan) or (bai toan)) cau*.