Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh tai » thanh tai, hang tai, han tai
cau tren » cu tren, dau tren, ca tren
lang mai » lang dai, lang hai, lang man
mai khoi » mai khoa, tai khoa, cac khoi
ve chat » va chat, van chat
hanh va » hang va, hanh vi
vu cham » va cham, vu kham, tu cham
y lang » o lang, _ lang, tay lang
soc va » hoc va, loc va, doc va

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 khoi. hieu ((ve chat) or (vu cham)) soc va ((hanh tai) or (hanh va)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y lang mai khoi. hieu ((ve chat) OR (vu cham)) soc va ((hanh tai) OR (hanh va)) cau tren.
• Adding a wildcard symbol may retrieve word variants: thu sach y lang mai khoi. hieu ((ve chat) or (vu cham)) soc va ((hanh tai) or (hanh va)) cau tren*.