Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu qua, diep quang
thanh tung » thanh cong
hieu quan » hieu qua, lieu quan, thien quan
tong cong » trong cong, cong cong, dung cong
tung cua » trung cua, tuong cua, dung cua
cua tong » cua cong, cua dong, cua nong
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 (((hieu quang) OR (hieu quan)))) - thanh tung cua tong cong dan phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chinh sach) OR (((hieu quang) OR (hieu quan)))) - thanh tung cua tong cong dan phan cac*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chinh sach) or (((hieu quang) OR (hieu quan)))) - thanh tung cua tong cong dan phan cac*".