Perhaps you should try some spelling variations:
thuc tien » thuc hien
nang mai » nang ma, nang tai, lang mai
hieu van » hieu va, thien van, lieu va
tai thuc » thai thuc, tri thuc, dai thuc
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va
cam duc » cam xuc, cao duc, pham duc
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky nang mai hoi. ((hieu ve) or (hieu van)) cam duc va dung tai thuc tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang mai hoi. ((hieu ve) OR (hieu van)) cam duc va dung tai thuc tien.
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang mai hoi. ((hieu ve) or (hieu van)) cam duc va dung tai thuc tien*.