Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh luat, trinh han
nhung cong » dung cong, thong cong, hang cong
hoc hieu » hoc thieu, doc hieu, hoc dieu
tinh cua » trinh cua, sinh cua, tinh chat
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan ban » can ban, chat ban, chan nan

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) or (hoc hien)) quang - hanh ((tinh cua) or (trinh quan)) nhung cong dan chan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hieu) OR (hoc hien)) quang - hanh ((tinh cua) OR (trinh quan)) nhung cong dan chan ban.
• Adding a wildcard symbol may retrieve word variants: ((hoc hieu) or (hoc hien)) quang - hanh ((tinh cua) or (trinh quan)) nhung cong dan chan ban*.