Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
tay lang » tai lang, tay tang, tay quang
tu sach » thu sach, su sach, te sach
ky dang » ky nang, ky danh
hieu tu » chieu tu, hieu tuc, hien tu
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
tu cam » tu cham, tu cac, tu nam
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thuat san)) ((tay lang) or (ky dang)) xa hoi. hieu tu cam xuc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat san)) ((tay lang) OR (ky dang)) xa hoi. hieu tu cam xuc va hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat san)) ((tay lang) or (ky dang)) xa hoi. hieu tu cam xuc va hanh vi cua tre*.