Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cau tren » cu tren, dau tren, cau treo
thanh va » thanh van, hanh va, thanh ha
va thanh » gia thanh, ban thanh, va tinh
cham cuu » cap cuu, chat cua
va cham » va chat, va tham
sang ma » tang ma, nang ma, sang tao
ca tren » cu tren, la tren, co tren
cuu va » cuu van, cuu ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y ((nang x) or (sang ma)) hoi. lieu va cham cuu va thanh va ((cau tren) OR (ca tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y ((nang x) OR (sang ma)) hoi. lieu va cham cuu va thanh va ((cau tren) OR (ca tren))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y ((nang x) or (sang ma)) hoi. lieu va cham cuu va thanh va ((cau tren) OR (ca tren))*".