Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
san thu » san thuc, van thu, san phu
van anh » van thanh, tuan anh, van minh
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac
anh vi » hanh vi, anh va, anh ve
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: thuat san thu ((nang ma) or (van xay)) hoi. hieu ((ve cam) OR (ve cac)) xuc van anh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat san thu ((nang ma) OR (van xay)) hoi. hieu ((ve cam) OR (ve cac)) xuc van anh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat san thu ((nang ma) or (van xay)) hoi. hieu ((ve cam) OR (ve cac)) xuc van anh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: thuat san thu ((nang ma) or (van xay)) hoi. hieu ((ve cam) OR (ve cac)) xuc van anh vi cua tre*.