Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
cua tre » cua te, cuu tre, cua triet
cac loc » cac lop, cac toc, cac hoc
vai cua » dai cua, hai cua, lai cua
thu san » thuy san, phu san, thuat san
thu ban » thu hang
ky sang » ky nang, ky dang, ky tang
sang ma » tang ma, nang ma, sang tao
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
tu san » tu ban, tu can, vu san
loc va » hoc va, luc va
ma hoi » mai hoi, xa hoi, ma hoa

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 (thu san))) or (thu ban)) ky sang ma hoi. hieu va cac loc va hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu san) OR (thu san))) OR (thu ban)) ky sang ma hoi. hieu va cac loc va hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((tu san) OR (thu san))) or (thu ban)) ky sang ma hoi. hieu va cac loc va hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((((tu san) OR (thu san))) or (thu ban)) ky sang ma hoi. hieu va cac loc va hanh vai cua tre*.