Perhaps you should try some spelling variations:
su sach » so sach, vu sach
cam dan » cac dan, ca dan, nam dan
ky lang » ky nang, ky tang, tay lang
vai cua » dai cua, hai cua, lai cua
ky dang » ky nang, ky danh
hieu ve » hieu van
dan vai » dan va, dan tai, dan vat
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
xuc cam » phuc cam
cua tu » cua tuc, cua su, cua cu

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 ((ky lang) OR (ky dang)) xa hoi. ((hieu ve) or (hieu va)) cac xuc cam dan vai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky lang) OR (ky dang)) xa hoi. ((hieu ve) OR (hieu va)) cac xuc cam dan vai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky lang) OR (ky dang)) xa hoi. ((hieu ve) or (hieu va)) cac xuc cam dan vai cua tu".
• Adding a wildcard symbol may retrieve word variants: su sach ((ky lang) OR (ky dang)) xa hoi. ((hieu ve) or (hieu va)) cac xuc cam dan vai cua tu*.