Perhaps you should try some spelling variations:
su sach » so sach, vu sach
ty nang » ty hang, ly nang, ty nong
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
dan vat » dang vat, van vat, dan va
vat cuu » vat cua
cuu tre » cua tre, cau tren, cau treo
ve cam » ve cham, ve cac, va cam
tuc va » thuc va, truc va, tuc xa
va dan » ca dan, va dao, 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: su sach ((((ty nang) or (ky nang))) or (ty xang)) xa hoi. hieu ve cam tuc va dan vat cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((((ty nang) OR (ky nang))) OR (ty xang)) xa hoi. hieu ve cam tuc va dan vat cuu tre.
• Adding a wildcard symbol may retrieve word variants: su sach ((((ty nang) or (ky nang))) or (ty xang)) xa hoi. hieu ve cam tuc va dan vat cuu tre*.