Perhaps you should try some spelling variations:
theo phap » thi phap
phap tinh » phap sinh, phap tieng, phap tang
hanh tang » hanh trang, anh tang, hanh mang
luan hang » luan nang, luan han, luan hung
van nang » van quang, van ban, van dong
cong tac » cong ty
toan cau » 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: theo phap tinh - hanh tang ((luan hang) or (van nang)) ((huong dan) or (cong tac)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo phap tinh - hanh tang ((luan hang) OR (van nang)) ((huong dan) OR (cong tac)) toan cau.
• Adding a wildcard symbol may retrieve word variants: theo phap tinh - hanh tang ((luan hang) or (van nang)) ((huong dan) or (cong tac)) toan cau*.