Perhaps you should try some spelling variations:
phat duc » pham duc, phan duc, phan duoc
va hanh » van hanh, va thanh, va danh
dai hoi » dai hoc, dai hai, dai moi
su phat » su pham, tu phat, xu phat
hieu su » hieu sau, tieu su, hieu so
lai roi » lai hoi, loi roi
tu sac » tu sach, tu cac, tu bac
vi cua » vai cua, di cua
cua te » cua tu
tu san » thu san, tu ban, tu can

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 nang ((dai hoi) or (lai roi)). hieu su phat duc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu san)) ky nang ((dai hoi) OR (lai roi)). hieu su phat duc va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu san)) ky nang ((dai hoi) or (lai roi)). hieu su phat duc va hanh vi cua te*.