Perhaps you should try some spelling variations:
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cua triet, dua tren
dung co » dung cho, dung cong, dung cua
va dung » van dung, va duong, vat dung
cuu tre » cau tren, cau treo
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
ve cam » ve cham, va cam, ve cai
tuc va » thuc va, truc va, tuc xa
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty nang xa hoi. hieu ((ve cam) or (ve cac)) tuc va dung co ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. hieu ((ve cam) OR (ve cac)) tuc va dung co ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu ((ve cam) or (ve cac)) tuc va dung co ((cua tre) or (cuu tre))*.