Perhaps you should try some spelling variations:
cau theo » cau thi, cau tao
hanh vai » hanh vi, hanh va, hanh tai
vai cau » va cau, van cau, vai cac
hieu ve » hieu va, hieu van
tu sach » thu sach, su sach, te sach
hang xa » hoang xa, hang va, hang ca
ty hang » ly hang, ty xang, thi hang
bo sach » co sach, hoc sach
tuc va » thuc va, truc va, duc va
ve cam » ve cham, ve cac, va cam

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (bo sach)) ty hang xa hoi. hieu ve cam ((tuc va) or (tuc xa)) hanh vai cau theo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (bo sach)) ty hang xa hoi. hieu ve cam ((tuc va) OR (tuc xa)) hanh vai cau theo.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (bo sach)) ty hang xa hoi. hieu ve cam ((tuc va) or (tuc xa)) hanh vai cau theo*.