Perhaps you should try some spelling variations:
thanh tung » thanh cong
toan khoan » toan khoa, toan phan, toan hoat
tung tuan » trung tuan, hung tuan, quang tuan
tuan hang » tuan hoang, tuan bang, tuan dang
hang cong » dang cong, hang nong, bang cong
tan khan » tan khang, tan nhan, tran khanh
ho lieu » co lieu, ho kieu, ho chieu
so lieu » so dieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho lieu) or (so lieu)) tinh - thanh tung tuan hang cong ((tan khan) OR (toan khoan)) ap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho lieu) OR (so lieu)) tinh - thanh tung tuan hang cong ((tan khan) OR (toan khoan)) ap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho lieu) or (so lieu)) tinh - thanh tung tuan hang cong ((tan khan) OR (toan khoan)) ap".
• Adding a wildcard symbol may retrieve word variants: ((ho lieu) or (so lieu)) tinh - thanh tung tuan hang cong ((tan khan) OR (toan khoan)) ap*.