Perhaps you should try some spelling variations:
phuong tinh » phuong trinh, phuong binh, khuong tinh
hieu quang » thieu quang, hieu quan, hieu qua
nhu phuong » thu phuong, nhung phuong, thi phuong
hieu lang » chieu sang, nhieu tang, hieu van
trang cua » tranh cua, tang cua, trung cua
toan ban » van ban
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((hieu lang) or (hieu quang)) - hanh ((trang cua) or (ban cua)) nhu phuong tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu lang) OR (hieu quang)) - hanh ((trang cua) OR (ban cua)) nhu phuong tinh toan ban.
• Adding a wildcard symbol may retrieve word variants: doi ((hieu lang) or (hieu quang)) - hanh ((trang cua) or (ban cua)) nhu phuong tinh toan ban*.