Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
van thanh » ban thanh, van tuan
thu san » thuy san, thu ban, phu san
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
duc van » duc va, duc tan, duc manh
tu ban » thu ban, te ban
qua ca » qua cac, qua cua, qua cai
ca duc » cao duc, cua duc, ca dua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu ban) or (thu san)) ky lang xa hoi. hieu qua ca duc van thanh dai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu ban) OR (thu san)) ky lang xa hoi. hieu qua ca duc van thanh dai cua vat.
• Adding a wildcard symbol may retrieve word variants: ((tu ban) or (thu san)) ky lang xa hoi. hieu qua ca duc van thanh dai cua vat*.