Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
van thanh » ban thanh, van tuan
dau tren » dau tien, dat tren, dau tieng
cham duc » pham duc, cham soc, pham duy
nang ma » tang ma, nang cao, mang may
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
duc van » duc va, duc tan, duc manh
sang ma » tang ma, sang tao, mang may
doi dau » doan dau
tu sach » thu sach, su sach, te sach
sach v » sach va, sach y, sach 2

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 v ((sang ma) OR (nang ma)) hoi. hieu ve cham duc van thanh doi dau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach v ((sang ma) OR (nang ma)) hoi. hieu ve cham duc van thanh doi dau tren".
• Adding a wildcard symbol may retrieve word variants: tu sach v ((sang ma) OR (nang ma)) hoi. hieu ve cham duc van thanh doi dau tren*.