Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
nang xa » nang x, lang xa, nang ma
van cac » van cau, van bac, dan cac
van hac » van hoc, van ha, van hai
sach ky » sac ky, sach y, sach ty
va danh » va dinh, va hanh, dia danh
doi cua » dai cua, hoi cua
va dan » ca dan, va dao, va dau
cua te » cua tu

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 ky nang xa hoi. hieu ((van cac) or (van hac)) truc ((va danh) OR (va dan)) doi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang xa hoi. hieu ((van cac) OR (van hac)) truc ((va danh) OR (va dan)) doi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang xa hoi. hieu ((van cac) or (van hac)) truc ((va danh) OR (va dan)) doi cua te".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang xa hoi. hieu ((van cac) or (van hac)) truc ((va danh) OR (va dan)) doi cua te*.