Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
cau treo » cau theo, cau tren, cau triet
dai hoi » dai hoc, dai hai, dai moi
ve cham » va cham, ve chat, vu cham
xuc van » duc van, luc van, vuc van
mai hoi » mai khoi, lai hoi, mai doi
vai cau » va cau, van cau, vai cac
y lang » o lang, _ lang, tay lang
ve cam » ve cac, va cam, ve cai

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 ((mai hoi) or (dai hoi)). hieu ((ve cam) or (ve cham)) xuc van hanh vai cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y lang ((mai hoi) OR (dai hoi)). hieu ((ve cam) OR (ve cham)) xuc van hanh vai cau treo.
• Adding a wildcard symbol may retrieve word variants: thu sach y lang ((mai hoi) or (dai hoi)). hieu ((ve cam) or (ve cham)) xuc van hanh vai cau treo*.