Perhaps you should try some spelling variations:
thanh va » thanh van, hanh va, thanh ha
vu khach » vu khanh, vu khac, vay khach
thanh vi » hanh vi, thanh ve, nhanh vi
su sach » so sach, vu sach
cao suc » cao su, cao duc
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
suc va » duc va, tuc va, luc va
ve cao » va cao, ve bao, ve cac
x hoi » xa hoi, o hoi, x ho

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) or (vu khach)) ky nang x hoi. hieu ve cao suc va ((thanh vi) OR (thanh va)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu khach)) ky nang x hoi. hieu ve cao suc va ((thanh vi) OR (thanh va)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu khach)) ky nang x hoi. hieu ve cao suc va ((thanh vi) OR (thanh va)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu khach)) ky nang x hoi. hieu ve cao suc va ((thanh vi) OR (thanh va)) cuu tre*.