Perhaps you should try some spelling variations:
dong chuan » dong chan, dong thuan, dong chuyen
chuan doan » chan doan
phuong dan » phuong danh, phuong doan, huong dan
toc chieu » toc thieu, doc hieu, doi chieu
hoc thieu » toc thieu, hoc hien
anh dong » anh huong, anh son
toan tai » toan tap, doanh tai, toan ban
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc chieu) or (hoc thieu)) xanh - anh dong chuan doan phuong dan ((toan tai) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc chieu) OR (hoc thieu)) xanh - anh dong chuan doan phuong dan ((toan tai) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: ((toc chieu) or (hoc thieu)) xanh - anh dong chuan doan phuong dan ((toan tai) or (toan cao))*.