Perhaps you should try some spelling variations:
hang tai » hang va, dung tai
hieu van » hieu va, thien van, lieu va
van tuan » van quan, van ban, anh tuan
hanh tai » thanh tai, han tai, hinh tai
su sach » so sach, vu sach
tai roi » lai roi, tai hoi, tai loi
tai cua » thai cua, tai cuc, tri cua
y hang » ly hang, ty hang, yu hang
soc va » loc va, doc va, goc va
cua te » cua tu

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 hang tai roi. hieu van tuan ((soc va) or (hoc va)) hanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y hang tai roi. hieu van tuan ((soc va) OR (hoc va)) hanh tai cua te.
• Adding a wildcard symbol may retrieve word variants: su sach y hang tai roi. hieu van tuan ((soc va) or (hoc va)) hanh tai cua te*.