Perhaps you should try some spelling variations:
sach tham » sach nha
tham nang » nham nang, tham lang, tham nhung
manh hanh » xanh hanh, danh thanh, minh thanh
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, nam duoc
lai cua » hai cua, lai chau, thai cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach tham nang xa hoi. hieu ve ((cam duc) OR (pham duc)) manh hanh ((lai cua) or (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach tham nang xa hoi. hieu ve ((cam duc) OR (pham duc)) manh hanh ((lai cua) OR (dai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach tham nang xa hoi. hieu ve ((cam duc) OR (pham duc)) manh hanh ((lai cua) or (dai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: su sach tham nang xa hoi. hieu ve ((cam duc) OR (pham duc)) manh hanh ((lai cua) or (dai cua)) tre*.