Perhaps you should try some spelling variations:
thong cong » trong cong, thong thong, phong chong
nhung cong » dung cong, hang cong, nhung don
hieu lang » chieu sang, hieu quang, nhieu tang
hanh sinh » hanh tinh, hanh dinh, hinh sinh
tong cong » trong cong, cong cong, dung cong
tan phan » toan phan, than phan, van phan
phan dau » phan tu, hang dau
ho hieu » ho chieu, hoi hieu, nho hieu
sinh va » sinh vat, tinh va, dinh van

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 sinh va ((nhung cong) or (((thong cong) or (tong cong)))) tan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh sinh va ((nhung cong) OR (((thong cong) OR (tong cong)))) tan phan dau.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh sinh va ((nhung cong) or (((thong cong) or (tong cong)))) tan phan dau*.