Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
hieu vien » hieu hien, thieu nien, hieu tieng
ban thanh » ban hanh, ban hang
thanh vai » thanh hai, thanh van, thanh tai
thu sach » tu sach, thuat sach, thuoc sach
sach ky » sac ky, sach y, sach ty
dai duc » dao duc, dai dua, mai duc
duc ban » duc tan, duc van, dua ban
vai cuu » vai cua
cuu tre » cua tre, cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang x ho. ((hieu vien) OR (hieu viec)) dai duc ban thanh vai cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang x ho. ((hieu vien) OR (hieu viec)) dai duc ban thanh vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang x ho. ((hieu vien) OR (hieu viec)) dai duc ban thanh vai cuu tre*.