Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cham luc » cham soc, nhan luc, cham cuu
cau tren » cu tren, ca tren, cau treo
dau tren » dau tien, dat tren, dau tieng
nang xa » nang x, lang xa, nang ma
va cham » va chat, va tham
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
y nang » ky nang, ly nang, v nang

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 y nang xa hoi. lieu va cham luc ((va hanh) OR (va danh)) va ((cau tren) or (dau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y nang xa hoi. lieu va cham luc ((va hanh) OR (va danh)) va ((cau tren) OR (dau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y nang xa hoi. lieu va cham luc ((va hanh) OR (va danh)) va ((cau tren) or (dau tren))".
• Adding a wildcard symbol may retrieve word variants: thuat sach y nang xa hoi. lieu va cham luc ((va hanh) OR (va danh)) va ((cau tren) or (dau tren))*.