Perhaps you should try some spelling variations:
tieu tinh » trieu tinh, tieu trinh, lieu tinh
hanh mang » nhanh mang, hanh trang, nhanh lang
mang luan » tang luan, hang luan, bang luan
phan cong » thanh cong
manh toan » thanh toan, anh tuan, tinh toan
van thanh » ban thanh, van tuan
han cong » hang cong, hanh cong, han tong

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 mang luan ((han cong) or (phan cong)) ((manh toan) or (van thanh)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu tinh - hanh mang luan ((han cong) OR (phan cong)) ((manh toan) OR (van thanh)) cao.
• Adding a wildcard symbol may retrieve word variants: theo tieu tinh - hanh mang luan ((han cong) or (phan cong)) ((manh toan) or (van thanh)) cao*.