Perhaps you should try some spelling variations:
tong chuan » thong chuan, trong chuan, dong chuan
chuan doan » chan doan
phuong dan » phuong danh, phuong doan, huong dan
hoc dieu » hoc thieu, hoc hien
anh tong » anh trong, anh thong, anh dong
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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 hanh - anh tong chuan doan phuong dan ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dieu hanh - anh tong chuan doan phuong dan ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc dieu hanh - anh tong chuan doan phuong dan ((toan cau) or (toan ban))*.