Perhaps you should try some spelling variations:
dieu tinh » diep tinh, lieu tinh, dien tinh
manh hung » anh huong
dung cong » dung trong
hoc dieu » hoc thieu, hoc hien
hung qua » dung qua, hung quang, nhung quy
qua dung » quang dung, su dung, qua song
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 - manh hung qua dung cong ((dan toan) or (van tuan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dieu tinh - manh hung qua dung cong ((dan toan) OR (van tuan)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc dieu tinh - manh hung qua dung cong ((dan toan) or (van tuan)) cao*.