Perhaps you should try some spelling variations:
manh trung » manh tung, thanh trung, manh hung
chieu sach » chinh sach, chiet tach, chieu sang
trung tuan » trung thanh, trung tam, tran tuan
theo sach » thuoc sach, te sach, theo lich
tuan hung » tran hung, luan hung, tuan dung
hung cong » nhung cong, hung cuong, phung cong
tan thai » ban thai, tan tai, van thai
tay thai » lay thai, toc thai, y thai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((theo sach) or (chieu sach)) - manh trung tuan hung cong ((tan thai) OR (tay thai)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((theo sach) OR (chieu sach)) - manh trung tuan hung cong ((tan thai) OR (tay thai)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((theo sach) or (chieu sach)) - manh trung tuan hung cong ((tan thai) OR (tay thai)) cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((theo sach) or (chieu sach)) - manh trung tuan hung cong ((tan thai) OR (tay thai)) cao*.