Perhaps you should try some spelling variations:
trinh xuan » trinh quan, trinh luan, trinh luat
thanh xuan » thanh san, thanh toan, thanh phan
trung cong » truong cong, trong cong, trung uong
hoc thieu » hoc hien
san khang » van khang, san chang, san khong
cong san » cong tac
khang a » chang ha, khan gia, khang cu

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) or (toc thieu)) khang - canh ((trinh xuan) or (thanh xuan)) trung cong san khang a~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) khang - canh ((trinh xuan) OR (thanh xuan)) trung cong san khang a.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) khang - canh ((trinh xuan) or (thanh xuan)) trung cong san khang a*.