Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
trung cap » truong cao, trung tam
cap nhung » cam nhung, vap nhung, dap nhung
cong anh » cong danh, dong anh, hong anh
toan cao » toan tap
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: theo ((chiet tach) or (hieu lang)) - thanh trung cap nhung cong anh ((toan cao) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chiet tach) OR (hieu lang)) - thanh trung cap nhung cong anh ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chiet tach) or (hieu lang)) - thanh trung cap nhung cong anh ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: theo ((chiet tach) or (hieu lang)) - thanh trung cap nhung cong anh ((toan cao) OR (toan ban))*.