Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cham luc » cham soc, nhan luc, cham cuu
van hanh » van thanh, ban hanh, van anh
nang ma » tang ma, sang ma, nang cao
va cham » va chat, va tham
va hanh » va thanh, va danh, ban hanh
cu tren » tu tren, dua tren
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
vi cu » vi su, vi xu, vi du

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 ma hoi. lieu va cham luc ((va hanh) OR (van hanh)) vi cu tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y nang ma hoi. lieu va cham luc ((va hanh) OR (van hanh)) vi cu tren".
• Adding a wildcard symbol may retrieve word variants: thuat sach y nang ma hoi. lieu va cham luc ((va hanh) OR (van hanh)) vi cu tren*.