Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh tai, thanh oai
thanh van » thanh san, thanh toan, thanh phan
cua triet » cua viet, su triet, va triet
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cuu tre » cua tre, cau tren, cau treo
ve cac » va cac, vien cac
cac ly » cac ky, cac le, cam ly

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

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