Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » dung cong, thong cong, hang cong
tung tuan » hung tuan, quang tuan, trang tuan
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
tan khan » tan khang, tan nhan, toan khoan
khan cap » khan ap, than cap, khoan cam
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 chieu) or (so lieu)) tinh - thanh ((tung tuan) OR (trung tuan)) nhung cong tan khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (so lieu)) tinh - thanh ((tung tuan) OR (trung tuan)) nhung cong tan khan cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (so lieu)) tinh - thanh ((tung tuan) OR (trung tuan)) nhung cong tan khan cap".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (so lieu)) tinh - thanh ((tung tuan) OR (trung tuan)) nhung cong tan khan cap*.