Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
dieu tinh » diep tinh, lieu tinh, dien tinh
trung cua » truong cua, trung tuan, trung cap
hoc dieu » hoc thieu, hoc hien
tang cua » mang cua, hang cua, tang luan
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc dieu tinh - hanh ((tang cua) or (trung cua)) nhung cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dieu tinh - hanh ((tang cua) OR (trung cua)) nhung cong dan toan ban*.