Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh thuc » trinh tu, trinh thi
thuc duong » thuy duong, thuc dung, thuc uong
duong cong » dung cong, luong cong, duong trong
tieu tinh » trieu tinh, tieu trinh, lieu tinh
tan toan » tan tran, tap toan, dan toan
van toan » van tan, van thanh, manh toan
van tuan » van quan, van ban, anh tuan

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 tinh - hanh trinh thuc duong cong ((tan toan) or (((van toan) or (van tuan)))) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu tinh - hanh trinh thuc duong cong ((tan toan) OR (((van toan) OR (van tuan)))) tap.
• Adding a wildcard symbol may retrieve word variants: theo tieu tinh - hanh trinh thuc duong cong ((tan toan) or (((van toan) or (van tuan)))) tap*.