Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh tranh » canh tranh, hanh trinh, hanh trang
thang long » thanh cong
tranh cua » doanh cua, manh cua
dang long » dang cong, nang luong, dang hoang
ho chieu » hoc thieu, doi chieu, mot chieu
toan cao » toan ban, toan tap

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)) tinh - hanh tranh cua ((dang long) OR (thang long)) tinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) tinh - hanh tranh cua ((dang long) OR (thang long)) tinh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (ho chieu)) tinh - hanh tranh cua ((dang long) OR (thang long)) tinh toan cao".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (ho chieu)) tinh - hanh tranh cua ((dang long) OR (thang long)) tinh toan cao*.