Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
xang lai » mang lai, dang loai, trang lai
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
lai hoi » dai hoi, lai hoa, lai roi
qua cac » cua cac
cac duc » cac du, cao duc, cac dac
va hanh » va thanh, va danh, ban hanh
su tien » su kien, su hien, tu tieng
di su » doi su, ki su, da su

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 (thuat sach)) ty xang lai hoi. hieu qua cac duc ((va hanh) or (van hanh)) di su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat sach)) ty xang lai hoi. hieu qua cac duc ((va hanh) OR (van hanh)) di su tien.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat sach)) ty xang lai hoi. hieu qua cac duc ((va hanh) or (van hanh)) di su tien*.