Perhaps you should try some spelling variations:
nhat hanh » nhat ban, nhat minh
thien van » thi van
thu sach » tu sach, thuat sach, thuoc sach
cau tren » cu tren, dau tren, ca tren
sach ty » sach y, sach tu, sach thu
cam luc » cau luc
lang xa » lang ha, dang xay, lang van
hanh va » hang va, hanh vi
va cau » van cau, va cac, va dau

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 ty ((lang xa) or (nang cao)) hoi. thien van ((cam luc) OR (cam xuc)) nhat hanh va cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty ((lang xa) OR (nang cao)) hoi. thien van ((cam luc) OR (cam xuc)) nhat hanh va cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty ((lang xa) or (nang cao)) hoi. thien van ((cam luc) OR (cam xuc)) nhat hanh va cau tren".
• Adding a wildcard symbol may retrieve word variants: thu sach ty ((lang xa) or (nang cao)) hoi. thien van ((cam luc) OR (cam xuc)) nhat hanh va cau tren*.