Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
hoang van » hang va
thanh tai » thanh hai, thanh toan, doanh tai
ho chieu » hoc thieu, doi chieu, mot chieu
song van » trong van, duong van, dang van

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)) xanh - hanh tranh cua cong ((song van) OR (hoang van)) thanh tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) xanh - hanh tranh cua cong ((song van) OR (hoang van)) thanh tai.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (ho chieu)) xanh - hanh tranh cua cong ((song van) OR (hoang van)) thanh tai".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (ho chieu)) xanh - hanh tranh cua cong ((song van) OR (hoang van)) thanh tai*.