Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hop nhieu » hoc thieu, ho chieu, hoc nhiet
he nhieu » phu nhieu, he dieu, de hieu
cua dung » cua dong, qua dung, cua rung
cua dang » cua cong, cua ban
cac tuan » cac thanh, cac thuat, cac tuong
tuan cau » toan cau, quan cau, tuan cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((he nhieu) or (hop nhieu)) tang - hanh trinh ((cua dung) OR (cua dang)) trong cac tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((he nhieu) OR (hop nhieu)) tang - hanh trinh ((cua dung) OR (cua dang)) trong cac tuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((he nhieu) or (hop nhieu)) tang - hanh trinh ((cua dung) OR (cua dang)) trong cac tuan cau".
• Adding a wildcard symbol may retrieve word variants: ((he nhieu) or (hop nhieu)) tang - hanh trinh ((cua dung) OR (cua dang)) trong cac tuan cau*.