Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cau tren » cu tren, dau tren, ca tren
cham cuu » cap cuu, chat cua
dat tren » dat trong, dua tren
lang van » dang van, tang van, hoang van
va hang » van hang, va nang, va lang
lang xa » lang ha, dang xay
va cham » va chat, va tham
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 ((lang xa) or (lang van)) hoi. lieu va cham cuu va hang va ((cau tren) or (dat tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y ((lang xa) OR (lang van)) hoi. lieu va cham cuu va hang va ((cau tren) OR (dat tren)).
• Adding a wildcard symbol may retrieve word variants: thu sach y ((lang xa) or (lang van)) hoi. lieu va cham cuu va hang va ((cau tren) or (dat tren))*.