Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
thieu xanh » chieu xanh, hieu manh, thien danh
cong thanh » dong thanh, cong trinh, cong tan
thien anh » thien danh, tien anh, thien thanh
trinh qua » trinh quan, trinh cua, trinh quang
cong hach » cong sach, cong khanh, trong hach
qua dung » quang dung, su dung, qua song
toan cau » toan cao, toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien anh)) - hanh trinh qua dung ((cong hach) OR (cong thanh)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (thien anh)) - hanh trinh qua dung ((cong hach) or (cong thanh)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (thien anh)) - hanh trinh qua dung ((cong hach) or (cong thanh)) toan cau*.