Perhaps you should try some spelling variations:
thuoc sach » hoc sach, thuat sach, thuoc sinh
nuoc sach » nguoi sach, hoc sach, cuoc cach
thi nang » thi cong, ki nang, thi hanh
va danh » va dan, va hanh, dia danh
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cau luc » cau truc, cau phuc
va dinh » van dinh, va kinh, va tinh
di cua » dai cua, doi cua, de cua
va cau » van cau, va cac, 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: ((thuoc sach) OR (nuoc sach)) thi nang xa hoi. hieu va cau luc ((va danh) or (va dinh)) di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (nuoc sach)) thi nang xa hoi. hieu va cau luc ((va danh) OR (va dinh)) di cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuoc sach) OR (nuoc sach)) thi nang xa hoi. hieu va cau luc ((va danh) or (va dinh)) di cua te".
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) OR (nuoc sach)) thi nang xa hoi. hieu va cau luc ((va danh) or (va dinh)) di cua te*.