Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
thanh dam » thanh dat, thanh nam, thanh tam
hanh dao » lanh dao, thanh dat, doanh dao
nang cai » nang cao, nang tai, nang cap
hieu van » hieu va, thien van, lieu va
van pham » san pham, van phan, van phat
vu sach » vu bach, su sach, vu khach
thuc va » thuc vat, thuc dan, thuc day
sach ty » sach y, sach tu, sach thu
cai hoi » cau hoi, dai hoi, cai hoa
ty nang » ky nang, ty xang, ty hang
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 ty nang cai hoi. hieu van pham thuc va ((hanh dao) or (thanh dam)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty nang cai hoi. hieu van pham thuc va ((hanh dao) OR (thanh dam)) cua te.
• Adding a wildcard symbol may retrieve word variants: vu sach ty nang cai hoi. hieu van pham thuc va ((hanh dao) or (thanh dam)) cua te*.