Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
thien anh » thien danh, tien anh, thien chanh
cua nhung » va nhung
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
toan tap » toan ban

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

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