Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
viet nang » viet hoang, viet trang, viet nam
cua trong » cua truong, cua trung, ca trong
qua trong » quan trong, qua trinh, qua song
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan cac » nhan cach, phan dau, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chinh sach) or (viet nang)) - thanh tuong ((cua trong) OR (qua trong)) cong dan phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chinh sach) OR (viet nang)) - thanh tuong ((cua trong) OR (qua trong)) cong dan phan cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chinh sach) or (viet nang)) - thanh tuong ((cua trong) OR (qua trong)) cong dan phan cac".
• Adding a wildcard symbol may retrieve word variants: theo ((chinh sach) or (viet nang)) - thanh tuong ((cua trong) OR (qua trong)) cong dan phan cac*.