Perhaps you should try some spelling variations:
thanh sinh » thanh binh, thanh tinh, thanh vinh
tuong dan » huong dan, tung dan, truong dai
xuong dan » huong dan, xuong san, nguong dan
ho chung » so chung, cho chuong, chon chung
va thong » va thuong, va phuong, he thong
toan ban » van ban
sinh va » sinh vat, tinh va, dinh van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chua) or (ho chung)) tinh - thanh sinh va thong ((tuong dan) OR (xuong dan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chua) OR (ho chung)) tinh - thanh sinh va thong ((tuong dan) OR (xuong dan)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chua) or (ho chung)) tinh - thanh sinh va thong ((tuong dan) OR (xuong dan)) toan ban".
• Adding a wildcard symbol may retrieve word variants: ((ho chua) or (ho chung)) tinh - thanh sinh va thong ((tuong dan) OR (xuong dan)) toan ban*.