Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
truong cua » truong ca, truong quan, truong cao
phuong ban » phuong bang, phuong lan, phuong bac
hieu lang » chieu sang, hieu quang, nhieu tang
trung cua » trung tuan, trung cap, dung cua
hoc hieu » hoc thieu, hoc hien, doc hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu lang - thanh ((trung cua) or (truong cua)) nhung phuong ban ((quan ha) OR (quan he))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu lang - thanh ((trung cua) OR (truong cua)) nhung phuong ban ((quan ha) OR (quan he)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu lang - thanh ((trung cua) or (truong cua)) nhung phuong ban ((quan ha) OR (quan he))".
• Adding a wildcard symbol may retrieve word variants: hoc hieu lang - thanh ((trung cua) or (truong cua)) nhung phuong ban ((quan ha) OR (quan he))*.