Perhaps you should try some spelling variations:
te sach » toc sach
dan dat » dung dat, dong dat, dinh dat
dan lat » dan luat, dan lap, da lat
cau luc » cau truc, cau phuc
hieu va » lieu va, hieu qua
ky dang » ky nang, ky danh
ky sang » ky nang, ky tang, duy sang
va cau » van cau, va cac, va dau
luc va » duc va, tuc va, loc va
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: te sach ((ky sang) or (ky dang)) xa hoi. hieu va cau luc va ((dan lat) OR (dan dat)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky sang) OR (ky dang)) xa hoi. hieu va cau luc va ((dan lat) OR (dan dat)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky sang) or (ky dang)) xa hoi. hieu va cau luc va ((dan lat) OR (dan dat)) cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ((ky sang) or (ky dang)) xa hoi. hieu va cau luc va ((dan lat) OR (dan dat)) cua te*.