Perhaps you should try some spelling variations:
thanh cac » hanh cac, thanh bac, thanh ca
ban thanh » ban hanh, ban hang
te sach » toc sach
vu kham » vu khanh
cac khu » cac thu, cac khoi, cac kieu
duc ban » duc tan, duc van, dua ban
vu cham » va cham, tu cham, qua cham
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
tang xa » trang xa, tang ma, tang ha
khu tre » khoe tre, khoa tre, thuc tre

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky ((tang xa) OR (lang xa)) hoi. hieu ((vu cham) or (vu kham)) duc ban thanh cac khu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((tang xa) OR (lang xa)) hoi. hieu ((vu cham) OR (vu kham)) duc ban thanh cac khu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((tang xa) OR (lang xa)) hoi. hieu ((vu cham) or (vu kham)) duc ban thanh cac khu tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((tang xa) OR (lang xa)) hoi. hieu ((vu cham) or (vu kham)) duc ban thanh cac khu tre*.