Perhaps you should try some spelling variations:
nhung tuong » nhung huong, nhung phuong, hung vuong
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tinh » hanh trinh, thanh tinh, canh tinh
cua nhung » va nhung
manh toan » thanh toan, anh tuan, tinh toan
hoc hieu » hoc thieu, hoc hien, doc hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu lang - ((hanh tinh) OR (nhanh tinh)) cua nhung tuong ((xuan toan) or (manh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu lang - ((hanh tinh) OR (nhanh tinh)) cua nhung tuong ((xuan toan) OR (manh toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu lang - ((hanh tinh) OR (nhanh tinh)) cua nhung tuong ((xuan toan) or (manh toan)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc hieu lang - ((hanh tinh) OR (nhanh tinh)) cua nhung tuong ((xuan toan) or (manh toan)) cau*.