Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
cau tren » cu tren, dau tren, ca tren
kly nang » ky nang, ki nang, kha nang
va tham » van tham, va thanh, va thuat
tuc van » thuc van, truc van, tuc va
ly nang » ky nang, ly hang, ly vang
va cham » va chat
vi cau » va cau, ve cau, di cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((ly nang) or (kly nang)) xa hoi. lieu ((va cham) OR (va tham)) tuc van hanh vi cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ly nang) OR (kly nang)) xa hoi. lieu ((va cham) OR (va tham)) tuc van hanh vi cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((ly nang) or (kly nang)) xa hoi. lieu ((va cham) OR (va tham)) tuc van hanh vi cau tren".
• Adding a wildcard symbol may retrieve word variants: thu sach ((ly nang) or (kly nang)) xa hoi. lieu ((va cham) OR (va tham)) tuc van hanh vi cau tren*.