Perhaps you should try some spelling variations:
tren dich » trien dich, tren dinh, trinh dich
tranh cua » doanh cua
dung cong » dung trong
hoc tren » moc tren, hoc truyen, thuoc tren
manh cua » doanh cua, ban cua
cong dan » cong san, cong tan, huong dan
toan cau » toan ban, toan tap, toan tai
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: hoc tren dich - hanh ((tranh cua) or (manh cua)) dung cong dan ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc tren dich - hanh ((tranh cua) OR (manh cua)) dung cong dan ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc tren dich - hanh ((tranh cua) or (manh cua)) dung cong dan ((toan cau) or (toan cao))*.