Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xang » chieu sang, chieu xanh, hieu lang
thong cong » trong cong, tong cong, thong thong
trinh toan » tinh toan, thanh toan, trinh han
hanh tang » hanh trang, hanh mang, hanh tung
cua thong » cua thuong, cua khong, cua tong
anh tang » anh bang, anh dang, anh nang
toan ban » van ban

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 xang - ((hanh tang) or (anh tang)) cua thong cong trinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xang - ((hanh tang) OR (anh tang)) cua thong cong trinh toan ban.
• Adding a wildcard symbol may retrieve word variants: theo chieu xang - ((hanh tang) or (anh tang)) cua thong cong trinh toan ban*.