Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
dinh sach » sinh sach, tinh sach, chinh sach
trinh qua » trinh quan, trinh cua, trinh quang
bang cong » dang cong, hang cong, dung cong
bang song » nang song
xuat phan » thuat phan, xuat nhap, luan phan
hoc dinh » hoc sinh, hoc kinh, hoc danh
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc dinh sach - hanh trinh qua ((thanh cong) or (((bang cong) OR (bang song)))) xuat phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dinh sach - hanh trinh qua ((thanh cong) OR (((bang cong) OR (bang song)))) xuat phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc dinh sach - hanh trinh qua ((thanh cong) or (((bang cong) OR (bang song)))) xuat phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc dinh sach - hanh trinh qua ((thanh cong) or (((bang cong) OR (bang song)))) xuat phan cau*.