Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
dong cong » duong cong, dang cong, cong cong
dung cong » dung trong
tac tren » rac tren, tai tren, tap tren
tren cay » trien cay, tren may, ten cay
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - hanh tang luan ((dong cong) or (dung cong)) tac tren cay~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh tang luan ((dong cong) OR (dung cong)) tac tren cay.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh tang luan ((dong cong) or (dung cong)) tac tren cay*.