Perhaps you should try some spelling variations:
thien van » thi van
ban hanh » ban hang
dang xay » dang van, van xay
cua tre » cua te, cuu tre, cua triet
hanh di » hanh vi, hanh de, hang di
cac hoc » cach hoc, cac hop, bac hoc
cac loc » cac lop, cac toc, cac nuoc
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
tu can » tu ban, tu cac, thu canh
di cua » dai cua, doi cua, de cua
tu san » thu san, tu ban, vu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu san) or (tu can)) ky dang xay hoi. thien van ((cac loc) or (cac hoc)) ban hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu san) OR (tu can)) ky dang xay hoi. thien van ((cac loc) OR (cac hoc)) ban hanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu san) or (tu can)) ky dang xay hoi. thien van ((cac loc) or (cac hoc)) ban hanh di cua tre*.