Perhaps you should try some spelling variations:
chu treo » cau treo, cu tren, cau tren
nang mai » nang ma, nang tai, lang mai
danh hai » dang hai, lanh hai, manh hai
sach hay » sach han, sach ha, sach nay
sach ty » sach y, sach tu, sach thu
mai hoi » mai khoi, dai hoi, lai hoi
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, nam thuc
va danh » va dinh, va dan, va hanh
hai chu » hai chau, hoi chu, hai chi
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa

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 hay) or (sach ty)) nang mai hoi. hieu va cam tuc va danh hai chu treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach hay) OR (sach ty)) nang mai hoi. hieu va cam tuc va danh hai chu treo.
• Adding a wildcard symbol may retrieve word variants: su ((sach hay) or (sach ty)) nang mai hoi. hieu va cam tuc va danh hai chu treo*.