Perhaps you should try some spelling variations:
thu tuan » chu tuan, thu trang, thu thuat
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ma hoi » mai hoi, xa hoi, me hoi
ve cam » ve cham, ve cac, va cam
anh va » hanh va
va hoc » van hoc
hien » bien, vien, tien

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 ty xang ((ma hoi) or (ma hoa)). hieu ((ve cam) or (va cac)) thu tuan anh va hoc hien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty xang ((ma hoi) OR (ma hoa)). hieu ((ve cam) OR (va cac)) thu tuan anh va hoc hien.
• Adding a wildcard symbol may retrieve word variants: su sach ty xang ((ma hoi) or (ma hoa)). hieu ((ve cam) or (va cac)) thu tuan anh va hoc hien*.