Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
nang xa » nang x, lang xa, nang ma
hang di » hang doi, hang vi, hang dien
va hang » van hang, va nang, va lang
va cam » va cham, va cac, va cao
luc va » duc va, tuc va, loc va
ve cac » va cac, vien cac
y nang » ky nang, ly nang, v nang
ve cai » va cai, ve tai, ve cau
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 y nang xa hoi. hieu ((((ve cai) OR (ve cac))) or (va cam)) luc va hang di qua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang xa hoi. hieu ((((ve cai) OR (ve cac))) OR (va cam)) luc va hang di qua su.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang xa hoi. hieu ((((ve cai) OR (ve cac))) or (va cam)) luc va hang di qua su".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang xa hoi. hieu ((((ve cai) OR (ve cac))) or (va cam)) luc va hang di qua su*.