Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
chiet tach » chieu sach
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
trinh cua » tinh cua, trinh luat, trinh quan
tan thai » tay thai, ban thai, tan tai
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: doi ((chieu xanh) or (chiet tach)) - hanh trinh cua ((nhung cong) OR (thong cong)) tan thai cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (chiet tach)) - hanh trinh cua ((nhung cong) OR (thong cong)) tan thai cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) or (chiet tach)) - hanh trinh cua ((nhung cong) OR (thong cong)) tan thai cao".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) or (chiet tach)) - hanh trinh cua ((nhung cong) OR (thong cong)) tan thai cao*.