Perhaps you should try some spelling variations:
thuat sach » thuat lanh
thuat san » thuat toan, thuat song, thuat lanh
danh thai » anh thai, dang thai, dinh thai
thi nang » thi cong, ki nang, thi hanh
thai cua » than cua, tai cuc, tri cua
va danh » va dinh, va dan, va hanh
hoc luc » hoc duc, hoc lua, coc luc
cua tre » cua te, cuu tre, cua triet
thi van » thi lan, thi hanh
luc va » duc va, tuc va, loc va
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuat sach) or (thuat san)) ky nang x hoi. ((thi van) OR (thi nang)) hoc luc va danh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (thuat san)) ky nang x hoi. ((thi van) OR (thi nang)) hoc luc va danh thai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat sach) or (thuat san)) ky nang x hoi. ((thi van) OR (thi nang)) hoc luc va danh thai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) or (thuat san)) ky nang x hoi. ((thi van) OR (thi nang)) hoc luc va danh thai cua tre*.