Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
nhung cong » dung cong, thong cong, hang cong
thieu tinh » trieu tinh, chieu tinh, thien tinh
hoc thieu » toc thieu, hoc hien
hanh dinh » thanh dinh, hinh dinh, hanh tinh
dinh cua » dinh cuu, sinh cua, dinh cu
toan cau » toan cao, toan ban, toan tap
tuan cu » tuan tu, quan cua, tuan thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu tinh - hanh dinh cua ((nhung cong) or (nhung phuong)) van ((tuan cu) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - hanh dinh cua ((nhung cong) OR (nhung phuong)) van ((tuan cu) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - hanh dinh cua ((nhung cong) or (nhung phuong)) van ((tuan cu) or (toan cau))*.