Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
hieu viec » nhieu viec, hieu ve, sieu viet
thanh dai » thanh hai, thanh tai, thanh dat
nang ma » tang ma, sang ma, nang cao
viec da » viec dat, vien da, viec va
duc van » duc va, duc tan, duc manh
cua cau » cua cac, cua chu, cua cay
san ky » sang ky, van ky, dan ky
ma hoi » mai hoi, xa hoi, ma hoa
da duc » dao duc, da duoc, do duc
cua cu » cua chu, cua su, cua co
phi » phai

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

• Performing a fuzzy search may retrieve terms with similar spellings: phi san ky nang ma hoi. hieu viec da duc van thanh dai ((cua cu) OR (cua cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "phi san ky nang ma hoi. hieu viec da duc van thanh dai ((cua cu) OR (cua cau))".
• Adding a wildcard symbol may retrieve word variants: phi san ky nang ma hoi. hieu viec da duc van thanh dai ((cua cu) OR (cua cau))*.