Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
chiet tach » chieu sach
nguong dan » huong dan
truong va » truong dai, truong cao, truong dao
nong dan » cong dan, nong san, huong dan
toan cao » toan ban, toan tap
va lang » va nang, hoa lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sang) or (chiet tach)) - thanh truong va lang ((nong dan) OR (nguong dan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (chiet tach)) - thanh truong va lang ((nong dan) OR (nguong dan)) toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) or (chiet tach)) - thanh truong va lang ((nong dan) OR (nguong dan)) toan cao*".