Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
tinh dam » tinh nam, tinh da, tinh dau
cham cuu » cap cuu, chat cua
va tinh » may tinh
va cham » va chat, va tham
hieu va » lieu va, hieu qua
cao hoa » cao hoat, cao khoa, cau hoa
ly nang » ky nang, ly hang, ly vang
cuu va » cuu van, cuu ve
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) OR (toc sach)) ly nang cao hoa. hieu va cham cuu va tinh dam ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ly nang cao hoa. hieu va cham cuu va tinh dam ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ly nang cao hoa. hieu va cham cuu va tinh dam ((cua te) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) ly nang cao hoa. hieu va cham cuu va tinh dam ((cua te) or (cua tu))*.