Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, qua cua
su sach » so sach, vu sach
tai cuu » tai cuc, tai buu, tai cua
dan tai » van tai, dan thi, han tai
va cham » va chat, va tham
cuu tre » cua tre, cau tren, cau treo
lang xa » dang xay, lang van
lang ha » long ha
luc va » duc va, tuc va, loc va
va dan » ca dan, va dao, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y ((lang xa) or (lang ha)) hoi. hieu ((qua cham) OR (va cham)) luc va dan tai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((lang xa) OR (lang ha)) hoi. hieu ((qua cham) OR (va cham)) luc va dan tai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y ((lang xa) or (lang ha)) hoi. hieu ((qua cham) OR (va cham)) luc va dan tai cuu tre*".