Perhaps you should try some spelling variations:
tranh cao » tranh cac, tranh cai, tranh co
trinh cao » trinh chao, trinh co, trinh cau
thu sach » thuat sach, thuoc sach, thu hoach
sach han » sach tham, sach danh, sach nang
tu sach » su sach, te sach, tu cach
han con » nhan con, hai con, han lon
con khi » cong khi, co khi, con chi

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu sach ((tranh cao) OR (trinh cao)) khai đong luc ) or ( thu sach han con khi đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach ((tranh cao) OR (trinh cao)) khai đong luc ) OR ( thu sach han con khi đong luc )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tu sach ((tranh cao) OR (trinh cao)) khai đong luc ) or ( thu sach han con khi đong luc ))".
• Adding a wildcard symbol may retrieve word variants: (( tu sach ((tranh cao) OR (trinh cao)) khai đong luc ) or ( thu sach han con khi đong luc ))*.