Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
phuong van » phung van, phong van, phuong lan
hieu lang » chieu sang, hieu quang, nhieu tang
chinh cua » chinh ca, chinh sua, chinh luan
doi hieu » doi chieu, doc hieu, doi hien
hinh cua » sinh cua, tinh cua, dinh cua
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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 - hanh ((chinh cua) or (hinh cua)) nhung phuong van ((toan cau) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - hanh ((chinh cua) OR (hinh cua)) nhung phuong van ((toan cau) OR (toan tap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi hieu lang - hanh ((chinh cua) or (hinh cua)) nhung phuong van ((toan cau) OR (toan tap))*".