Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
nang di » nang du, hang di, nang ji
va nang » van nang, da nang, cam nang
kv nang » ky nang, ki nang, ke nang
ve cam » ve cham, ve cac, va cam
luc va » duc va, tuc va, loc va
v nang » vu nang, van nang, voi nang
di qua » di cua, di quanh

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 ((v nang) or (kv nang)) xa hoi. hieu ((ve cam) or (va cac)) luc va nang di qua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((v nang) OR (kv nang)) xa hoi. hieu ((ve cam) OR (va cac)) luc va nang di qua su.
• Adding a wildcard symbol may retrieve word variants: thu sach ((v nang) or (kv nang)) xa hoi. hieu ((ve cam) or (va cac)) luc va nang di qua su*.