Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
van bac » van ban, van bao, van hac
bac tuc » bac tu, bach tuoc, bac thua
va hanh » van hanh, va danh, ban hanh
cua tre » cua te, cuu tre, cua triet
san ky » sang ky, van ky, dan ky
hu cua » tu cua, vu 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 ky nang x ho. hieu van bac tuc ((va hanh) or (va thanh)) hu cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat san ky nang x ho. hieu van bac tuc ((va hanh) OR (va thanh)) hu cua tre.
• Adding a wildcard symbol may retrieve word variants: thuat san ky nang x ho. hieu van bac tuc ((va hanh) or (va thanh)) hu cua tre*.