Perhaps you should try some spelling variations:
tang mai » tang ma, tang tai, lang mai
hoi thuc » choi thuc, hoc thuc, hoi chuc
danh hoi » danh hoa, dan hoi, danh hoc
thuc te » thuc tien
hieu va » lieu va, hieu qua
mai hoi » mai khoi, dai hoi, lai hoi
ky tang » ky nang, ky dang, kho tang
vu sach » vu bach, su sach, vu khach
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
vu sac » vu san, va sac, vu cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sac) or (vu sach)) ky tang mai hoi. hieu va cam ((xuc va) or (luc va)) danh hoi thuc te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sac) OR (vu sach)) ky tang mai hoi. hieu va cam ((xuc va) OR (luc va)) danh hoi thuc te.
• Adding a wildcard symbol may retrieve word variants: ((vu sac) or (vu sach)) ky tang mai hoi. hieu va cam ((xuc va) or (luc va)) danh hoi thuc te*.