Perhaps you should try some spelling variations:
nhung trong » hung trong, nhung tuong, thuong trong
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
trong van » trong cac
sinh cua » manh cua, dinh cuu, sinh va
van toan » van tuan, van tan, van thanh
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 chieu sach - hanh ((sinh cua) or (tinh chat)) nhung trong van toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh ((sinh cua) OR (tinh chat)) nhung trong van toan cau.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh ((sinh cua) or (tinh chat)) nhung trong van toan cau*.