Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
cong san » cong tac
san thai » sac thai, ban thai, van thai
thai cao » tai cao, thoai cac, thuat cao

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 (hoc thieu)) xanh - ((hanh tranh) OR (hanh trinh)) va nhung cong san thai cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (hoc thieu)) xanh - ((hanh tranh) OR (hanh trinh)) va nhung cong san thai cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (hoc thieu)) xanh - ((hanh tranh) OR (hanh trinh)) va nhung cong san thai cao".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (hoc thieu)) xanh - ((hanh tranh) OR (hanh trinh)) va nhung cong san thai cao*.