Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
ban hanh » ban hang
mai khoa » tai khoa, may khoa, dai khoa
chat xuc » chat huu, cam xuc, chao xu
dai hoi » dai hoc, dai hai, dai moi
hieu va » lieu va, hieu qua
lai cua » dai cua, hai cua, lai chau
ky dang » ky nang, ky danh
xuc ban » duc ban, cuc ban, quoc ban
va chat » van chat, va phat, cao chat
tu sac » tu sach, tu cac, tu bac
tu san » thu san, tu ban, tu can
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sac) or (tu san)) ky dang ((mai khoa) or (dai hoi)). hieu va chat xuc ban hanh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu san)) ky dang ((mai khoa) OR (dai hoi)). hieu va chat xuc ban hanh lai cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu san)) ky dang ((mai khoa) or (dai hoi)). hieu va chat xuc ban hanh lai cua te*.