Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cham duc » pham duc, cham soc, pham duy
cua viet » ca viet, hoa viet, cua vat
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
hieu va » lieu va
dau cua » dai cua, cau cua, dan cua
day cua » dai cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ly nang x hoi. ((hieu va) or (hieu qua)) cham duc va ((dau cua) OR (day cua)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ly nang x hoi. ((hieu va) OR (hieu qua)) cham duc va ((dau cua) OR (day cua)) cua viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ly nang x hoi. ((hieu va) or (hieu qua)) cham duc va ((dau cua) OR (day cua)) cua viet*".