Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
duc van » duc va, duc tan, duc manh
hanh de » hanh kem
hanh ve » hanh vi, hanh va, hanh kem
te sai » te tai, te bai, te lai
sai ky » sac ky
va cam » va cham, va cac, va cao
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sai ky nang x hoi. hieu va cam duc van ((hanh de) or (hanh ve)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ky nang x hoi. hieu va cam duc van ((hanh de) OR (hanh ve)) cua viet.
• Adding a wildcard symbol may retrieve word variants: te sai ky nang x hoi. hieu va cam duc van ((hanh de) or (hanh ve)) cua viet*.