Perhaps you should try some spelling variations:
phuong tien » phuong trinh
hai phuong » hoai phuong, hai phong, tai phuong
thong minh » thong tin, hoang minh
can thong » ban thong, van thong, chan thuong
thu sach » tu sach, thuat sach, thuoc sach
sach cha » sach nha, sach che, sach ha
giai hai » giai bai, giai han, giai tai
gioi can » gioi van, gioi cam, gioi cau
me giai » de giai, ve giai, ke giai
ve gioi » ve giai, vien gioi, van gioi
cha ve » ca ve, pha ve, cha 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 cha me giai hai phuong tien ) or ( thu sach cha ve gioi can thong minh ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu sach cha me giai hai phuong tien ) OR ( thu sach cha ve gioi can thong minh )).
• Adding a wildcard symbol may retrieve word variants: (( thu sach cha me giai hai phuong tien ) or ( thu sach cha ve gioi can thong minh ))*.