Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
nhung cong » dung cong, thong cong, hang cong
trang cua » tranh cua, trung cua, thang cua
tang cua » mang cua, hang cua, tang luan
cong dan » cong san, cong tan, huong dan
than tap » toan tap, han tap, than cap
phan tap » phan lap, han tap, pha tap
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 quang - hanh ((trang cua) or (tang cua)) nhung cong dan ((than tap) or (phan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu quang - hanh ((trang cua) OR (tang cua)) nhung cong dan ((than tap) OR (phan tap)).
• Adding a wildcard symbol may retrieve word variants: ho hieu quang - hanh ((trang cua) or (tang cua)) nhung cong dan ((than tap) or (phan tap))*.