Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
can hanh » ban hanh, van hanh, dan hanh
cau tren » cu tren, dau tren, ca tren
nang xa » nang x, lang xa, nang ma
tu sach » su sach, te sach, tu cach
hieu va » lieu va, hieu qua
hanh di » hanh vi, hanh de, hang di
nam lo » nam bo, nam so, nam co
di cau » da cau, diem cau
cam ly » tam ly, cam ky, cam lo

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) OR (tu sach)) ky nang xa hoi. hieu va ((cam ly) or (nam lo)) can hanh di cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) ky nang xa hoi. hieu va ((cam ly) OR (nam lo)) can hanh di cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (tu sach)) ky nang xa hoi. hieu va ((cam ly) or (nam lo)) can hanh di cau tren".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (tu sach)) ky nang xa hoi. hieu va ((cam ly) or (nam lo)) can hanh di cau tren*.