Perhaps you should try some spelling variations:
dong thong » thong thong, nong thon, dong thanh
dong duong » tuong duong, cuong duong, dong trong
hieu lang » chieu sang, hieu quang, nhieu tang
hanh dung » thanh dung, anh dung, hanh dong
nho hieu » nha hieu, nho sieu, nhu hieu
dung cua » dung luan, dung cho
toan cau » toan cao, toan tap, toan tai
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: nho hieu lang - hanh dung cua ((dong duong) OR (dong thong)) tinh ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nho hieu lang - hanh dung cua ((dong duong) OR (dong thong)) tinh ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "nho hieu lang - hanh dung cua ((dong duong) OR (dong thong)) tinh ((toan cau) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: nho hieu lang - hanh dung cua ((dong duong) OR (dong thong)) tinh ((toan cau) or (toan ban))*.