Perhaps you should try some spelling variations:
thanh vai » thanh van, thanh tai, thanh oai
thanh hai » thanh phan, thanh hoa, thanh san
cau tren » cu tren, dau tren, ca tren
nang dai » nang dau, nang tai, lang dai
dua tren » dung tren
cao suc » cao su, cao duc
dai hoi » dai hoc, dai hai, dai moi
hieu ve » hieu va, hieu van
suc va » duc va, tuc va, luc va
ve cao » va cao, ve bao, ve cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang dai hoi. hieu ve cao suc va ((thanh vai) or (thanh hai)) ((cau tren) or (dua tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang dai hoi. hieu ve cao suc va ((thanh vai) OR (thanh hai)) ((cau tren) OR (dua tren)).
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang dai hoi. hieu ve cao suc va ((thanh vai) or (thanh hai)) ((cau tren) or (dua tren))*.