Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
chat truc » cau truc, chat xuc
cau treo » cau theo, cau tren, cau triet
nang xa » nang x, lang xa, nang ma
sang ma » tang ma, nang ma, sang tao
va chat » van chat, va phat, cao chat
truc va » thuc va, thuc vat, trung va
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
cu tren » tu tren, dua tren

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach y ((nang xa) or (sang ma)) hoi. lieu va chat truc va danh vi ((cau treo) or (cu tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y ((nang xa) OR (sang ma)) hoi. lieu va chat truc va danh vi ((cau treo) OR (cu tren)).
• Adding a wildcard symbol may retrieve word variants: thuoc sach y ((nang xa) or (sang ma)) hoi. lieu va chat truc va danh vi ((cau treo) or (cu tren))*.