Perhaps you should try some spelling variations:
thuyet tach » thuyet mach, thuyet hach, thuyet xac
hoc thuyet » hoc chuyen
thanh tung » thanh cong
doan phan » doanh phan, toan phan, doanh nhan
cap phan » cac phan, cao phan, cau phan
dan phan » dan chan, van phan, dam phan
cap han » cap can, cap hay, cap van

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thuyet tach - thanh tung ((cap han) or (cap phan)) cong ((dan phan) OR (doan phan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thuyet tach - thanh tung ((cap han) OR (cap phan)) cong ((dan phan) OR (doan phan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thuyet tach - thanh tung ((cap han) or (cap phan)) cong ((dan phan) OR (doan phan)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc thuyet tach - thanh tung ((cap han) or (cap phan)) cong ((dan phan) OR (doan phan)) cau*.