Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
tuong cong » truong cong, trong cong, tong cong
thi chieu » thi chien, thi hieu, theo chieu
theo chu » theo chieu, cho chu, chao chu
trinh va » trinh van, trinh vat, trinh ve
va tuong » va thuong, va thong, xa truong
tan toan » tan tran, van toan, dan toan
tap toan » tap doan, tap quan, bai toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thi chieu) or (theo chu)) tinh - hanh trinh va tuong cong ((tan toan) or (tap toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thi chieu) OR (theo chu)) tinh - hanh trinh va tuong cong ((tan toan) OR (tap toan)) cau.
• Adding a wildcard symbol may retrieve word variants: ((thi chieu) or (theo chu)) tinh - hanh trinh va tuong cong ((tan toan) or (tap toan)) cau*.