Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
huu phuc » huu thuc, huu phach, huu duc
cuu tre » cau tren, cau treo
phuc va » phuc vu, thuc va, chuc va
cua tre » cua te, cua triet, dua tren
hoa hoi » khoa hoi, hoa hoc, hoa doi
hieu ve » hieu va, hieu van
su sai » su tai, su hai, su dai
sai ky » sac ky
ha hoi » ha noi, xa hoi, va hoi
ve huu » le huu, vu huu, va huu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sai ky nang ((ha hoi) OR (hoa hoi)). hieu ve huu phuc va thanh vai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky nang ((ha hoi) OR (hoa hoi)). hieu ve huu phuc va thanh vai ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ky nang ((ha hoi) OR (hoa hoi)). hieu ve huu phuc va thanh vai ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: su sai ky nang ((ha hoi) OR (hoa hoi)). hieu ve huu phuc va thanh vai ((cua tre) or (cuu tre))*.