Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
nang cau » nang cao, hang cau, nang dau
vai cuu » vai cua
cuu tre » cua tre, cau tren, cau treo
sach ky » sac ky, sach ty, sach kem
hieu va » lieu va, hieu qua
tuc va » thuc va, truc va, duc va
va cam » va cham, va cac, va cao

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) or (sach y)) nang cau hoi. hieu va cam ((tuc va) or (tuc xa)) hanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ky) OR (sach y)) nang cau hoi. hieu va cam ((tuc va) OR (tuc xa)) hanh vai cuu tre.
• Adding a wildcard symbol may retrieve word variants: su ((sach ky) or (sach y)) nang cau hoi. hieu va cam ((tuc va) or (tuc xa)) hanh vai cuu tre*.