Perhaps you should try some spelling variations:
phuong trinh » chuong trinh, cong trinh, huong tran
cong phuong » cong thuong, cong huong, dong phuong
theo chieu » theo tieu, theo chu, thi chieu
trinh han » trinh quan
ho chieu » hoc thieu, doi chieu, mot chieu
hang cua » mang cua, huong cua, thong cua
hang ca » hang va, nang cao, hang tai
han cau » hang cau, phan cau, van cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (ho chieu)) sang - hanh ((hang cua) OR (hang ca)) cong phuong trinh han cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) sang - hanh ((hang cua) OR (hang ca)) cong phuong trinh han cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (ho chieu)) sang - hanh ((hang cua) OR (hang ca)) cong phuong trinh han cau".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (ho chieu)) sang - hanh ((hang cua) OR (hang ca)) cong phuong trinh han cau*.