Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
thanh dam » thanh dat, thanh nam, thanh tam
nang tai » hang tai, tang tai, sang tai
hieu van » hieu va, thien van, lieu va
van tham » van thanh, van tuan, van chat
hanh dao » lanh dao, thanh dat, doanh dao
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
tai hoi » tai khoi, dai hoi, tai hai
thuc va » thuc vat, thuc dan, thuc day
cua te » cua tu

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 tai hoi. hieu van tham thuc va ((hanh dao) or (thanh dam)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang tai hoi. hieu van tham thuc va ((hanh dao) OR (thanh dam)) cua te.
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang tai hoi. hieu van tham thuc va ((hanh dao) or (thanh dam)) cua te*.