Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trinh » canh tranh, hanh chinh
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » nhanh mang, hanh trang, nhanh lang
dong cong » duong cong, dung cong, dang cong
cua dong » chua dong, cua cong, cua dang
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
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 sang - ((((hanh tang) OR (hanh mang))) or (hanh trinh)) cua dong cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - ((((hanh tang) OR (hanh mang))) OR (hanh trinh)) cua dong cong tac toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sang - ((((hanh tang) OR (hanh mang))) or (hanh trinh)) cua dong cong tac toan cao".
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - ((((hanh tang) OR (hanh mang))) or (hanh trinh)) cua dong cong tac toan cao*.