Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong dong, truong cong
thuong con » thuong dong, truong cong, thong cong
trinh toan » tinh toan, thanh toan, trinh han
tieu lang » hieu lang, tien lang, tieu dung
hanh dang » hanh dong, anh dang, hanh mang
hanh dung » thanh dung, anh dung, hanh dong
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 tieu lang - ((hanh dang) or (hanh dung)) van ((thuong cong) OR (thuong con)) trinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu lang - ((hanh dang) OR (hanh dung)) van ((thuong cong) OR (thuong con)) trinh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu lang - ((hanh dang) or (hanh dung)) van ((thuong cong) OR (thuong con)) trinh toan cao".
• Adding a wildcard symbol may retrieve word variants: theo tieu lang - ((hanh dang) or (hanh dung)) van ((thuong cong) OR (thuong con)) trinh toan cao*.