Perhaps you should try some spelling variations:
thanh trung » thanh tung
dung phuong » dung thuong, bang phuong, dung chung
phuong tinh » phuong trinh, phuong binh, khuong tinh
chiet tach » chieu sach
chieu sang » chieu sach, chieu xanh, hieu lang
trung cap » truong cao, trung tam
cap dung » ap dung, cao dung, chan dung
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chiet tach) or (chieu sang)) - thanh trung cap dung phuong tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chiet tach) OR (chieu sang)) - thanh trung cap dung phuong tinh toan ban*.