Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hieu lang » chieu sang, hieu quang, nhieu tang
canh manh » lanh manh, canh tranh, cach mang
rung dung » trung dung, ung dung, dung dung
anh quang » anh xquang, anh quan, tinh quang
manh cua » doanh cua, ban cua
cua rung » cua trung, cua rang, cua truong

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu tinh) or (hieu lang)) - canh manh cua rung dung ((anh quang) OR (nhanh quang)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu tinh) OR (hieu lang)) - canh manh cua rung dung ((anh quang) OR (nhanh quang)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu tinh) or (hieu lang)) - canh manh cua rung dung ((anh quang) OR (nhanh quang)) cao".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu tinh) or (hieu lang)) - canh manh cua rung dung ((anh quang) OR (nhanh quang)) cao*.