Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
hieu van » hieu va, thien van, lieu va
van cam » van nam, van lam, van cau
cam duc » cam xuc, cao duc, pham duc
hanh va » hang va, hanh vi
sua chu » sua chua, cua chu, bua chu
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
x hoi » o hoi, x ho, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky nang ((x hoi) OR (xa hoi)). hieu van cam duc va ((hanh va) or (thanh tai)) sua chu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang ((x hoi) OR (xa hoi)). hieu van cam duc va ((hanh va) OR (thanh tai)) sua chu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky nang ((x hoi) OR (xa hoi)). hieu van cam duc va ((hanh va) or (thanh tai)) sua chu".
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang ((x hoi) OR (xa hoi)). hieu van cam duc va ((hanh va) or (thanh tai)) sua chu*.