Perhaps you should try some spelling variations:
thuoc sach » hoc sach, thuat sach, thuoc sinh
nuoc sach » nguoi sach, hoc sach, cuoc cach
tham nang » nham nang, tham lang, tham nhung
nang xa » nang x, lang xa, nang ma
manh le » thanh le
va manh » van manh, va danh, va hanh
van hau » van ha, van hai, van dau
le cua » ly cua
va cau » van cau, va cac, va dau
luc va » duc va, tuc va, loc va
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: ((thuoc sach) OR (nuoc sach)) tham nang xa hoi. hieu ((va cau) or (van hau)) luc va manh le cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (nuoc sach)) tham nang xa hoi. hieu ((va cau) OR (van hau)) luc va manh le cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuoc sach) OR (nuoc sach)) tham nang xa hoi. hieu ((va cau) or (van hau)) luc va manh le cua te*".