Perhaps you should try some spelling variations:
thanh trung » thanh tung
hoc thieu » toc thieu, hoc hien
trung cap » truong cao, trung tam
dung cong » dung trong
ho chieu » theo chieu, doi chieu, mot chieu
cap dung » ap dung, cao dung, chan dung
cong van » cong vang, cong san, song van
tang ban » tang bang, tiang ban, tang van
tan ban » toan ban, van ban, can ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) tinh - thanh trung cap dung cong van ((tan ban) OR (tang ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) tinh - thanh trung cap dung cong van ((tan ban) or (tang ban))~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) tinh - thanh trung cap dung cong van ((tan ban) or (tang ban))*.