Perhaps you should try some spelling variations:
thuat tinh » thuat trinh, thuat kinh, thuat hinh
hanh dung » thanh dung, anh dung, hanh dong
luan hanh » luan thanh, luan han, luan danh
hanh cong » thanh cong, hang cong, hanh dong
manh toan » thanh toan, anh tuan, tinh toan
chu tinh » chau tinh, chua tinh, cuu tinh
san toan » van toan, dan toan, xuan toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu tinh) or (thuat tinh)) - hanh dung luan hanh cong ((san toan) or (manh toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu tinh) OR (thuat tinh)) - hanh dung luan hanh cong ((san toan) OR (manh toan)) cao.
• Adding a wildcard symbol may retrieve word variants: theo ((chu tinh) or (thuat tinh)) - hanh dung luan hanh cong ((san toan) or (manh toan)) cao*.