Perhaps you should try some spelling variations:
tuong hieu » thuong hieu, trong hieu, guong hieu
dai tuong » dai cuong, doi tuong, dai duong
sach tri » sach tai, sach tren, sach truc
tuc giai » thuc giai, tuc gia, nuoc giai
tac giai » tac gia, cac giai, tap giai
te sach » toc sach
tue dai » tre dai, thue dat, truc dai

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 tri tue dai tuong hieu ((tuc giai) OR (tac giai))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tri tue dai tuong hieu ((tuc giai) OR (tac giai))*".