Perhaps you should try some spelling variations:
truong cong » trong cong, truong dong, truong long
chieu sang » chieu sach, chieu xanh, nhieu tang
cua truong » cua trung, xuan truong, cac truong
hieu lang » hieu quang, nhieu tang, hieu van
hanh hang » thanh hang, hang hang, hanh han
cong manh » cong danh, duong manh, cong thanh
hang cua » mang cua, hang ca, huong cua
toan cao » toan tap
toan ban » van 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: theo ((chieu sang) OR (hieu lang)) - hanh hang cua truong cong manh ((toan cao) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) or (hieu lang)) - hanh hang cua truong cong manh ((toan cao) OR (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (hieu lang)) - hanh hang cua truong cong manh ((toan cao) OR (toan ban))*.