Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
trinh cua » trinh luat, trinh quan, trinh luan
doc hieu » toc thieu, hoc thieu, hoc hien
tinh cua » sinh cua, tinh chat, tranh cua
cong dan » cong san, cong tan, huong dan
gian man » gian dan, gian lan, gian van

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu lang - nhanh ((tinh cua) OR (trinh cua)) nhung cong dan gian man~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu lang - nhanh ((tinh cua) OR (trinh cua)) nhung cong dan gian man".
• Adding a wildcard symbol may retrieve word variants: doc hieu lang - nhanh ((tinh cua) OR (trinh cua)) nhung cong dan gian man*.