Perhaps you should try some spelling variations:
sach trinh » hanh trinh, sach kinh, sach tren
sach tranh » canh tranh
tran hoang » tran hong, quan hoang, tran quang
hoang thai » hoang thi, hoang hai, hong thai
sach tran » sach tren, vach tran, sach tham
thu sach » tu sach, thuat sach, thuoc sach

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

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