Perhaps you should try some spelling variations:
thanh cac » hanh cac, thanh bac, thanh ca
ban thanh » ban hanh, ban hang
van chat » cao chat
kho tang » cao tang
te sach » toc sach
cac chu » cac thu, cac che, cac khu
duc ban » duc tan, duc van, dua ban
ve cham » va cham, ve chat, vu cham
ky tang » ky nang, ky dang, ky trong
chu tre » cho tre, chu tri, cuu tre
ha hoi » hoa hoi, ha noi, xa hoi

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) OR (kho tang)) ha hoi. hieu ((ve cham) or (van chat)) duc ban thanh cac chu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky tang) OR (kho tang)) ha hoi. hieu ((ve cham) OR (van chat)) duc ban thanh cac chu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky tang) OR (kho tang)) ha hoi. hieu ((ve cham) or (van chat)) duc ban thanh cac chu tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((ky tang) OR (kho tang)) ha hoi. hieu ((ve cham) or (van chat)) duc ban thanh cac chu tre*.