Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh oai
thanh tai » thanh hai, thanh toan, doanh tai
nhan luc » nang luc
cua tre » cua te, cua triet, dua tren
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ve nhan » ve nha, de nhan, va nhan
hieu ve » hieu va, hieu van
cao hoa » cao hoat, cao khoa, cau hoa
cuu tre » cau tren, cau treo
luc va » duc va, tuc va, loc va

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

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