Perhaps you should try some spelling variations:
toan thanh » tran thanh, hoan thanh, toan thang
thanh ban » thanh san, thanh van, thanh bac
kho tang » cao tang
duc toan » duc tan, duc ton, duc hoan
cau tren » cu tren, dau tren, ca tren
xac kho » cac khoi, dac khoa, cac khoa
tang xa » trang xa, tang ma, lang xa
ban cau » bang cau, ban can, van cau
su xac » pu xac, su cac
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: su xac kho tang xa hoi. hieu ((ve cam) or (va cam)) duc toan thanh ban cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su xac kho tang xa hoi. hieu ((ve cam) OR (va cam)) duc toan thanh ban cau tren.
• Adding a wildcard symbol may retrieve word variants: su xac kho tang xa hoi. hieu ((ve cam) or (va cam)) duc toan thanh ban cau tren*.