Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
canh trinh » canh tranh, hanh trinh, canh tinh
trinh nang » tinh nang, trinh bang, trinh mang
hoc thieu » toc thieu, hoc hien
tong cong » cong cong, dung cong, dang cong
manh toan » thanh toan, anh tuan, tinh toan
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: hoc thieu tinh - canh trinh nang ((tong cong) or (trong cong)) manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - canh trinh nang ((tong cong) OR (trong cong)) manh toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - canh trinh nang ((tong cong) or (trong cong)) manh toan ban*.