Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, ho chieu, mot chieu
trinh cua » tinh cua, trinh luat, trinh quan
hang dong » hang cong, hanh dong, lang dong
hang nong » thang long, han tong
toan cao » toan ban, toan tap
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (doi chi)) sach - hanh trinh cua ((hang dong) or (hang nong)) tinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) sach - hanh trinh cua ((hang dong) OR (hang nong)) tinh toan cao.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (doi chi)) sach - hanh trinh cua ((hang dong) or (hang nong)) tinh toan cao*.