Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
cang thang » cong thanh, dang thanh
dieu tinh » diep tinh, lieu tinh, dien tinh
dang hanh » dang thanh, ban hanh, dang van
hoc dieu » hoc thieu, hoc hien
dan toan » van toan, dan than, manh toan
van tuan » van quan, van ban, anh tuan

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 - ((cang thang) or (dang hanh)) va nhung cong ((dan toan) or (van tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dieu tinh - ((cang thang) OR (dang hanh)) va nhung cong ((dan toan) OR (van tuan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc dieu tinh - ((cang thang) or (dang hanh)) va nhung cong ((dan toan) or (van tuan)) cau*.