Perhaps you should try some spelling variations:
thanh dam » thanh nam, thanh tam, thanh lam
thanh dat » thanh san, thanh hai, thanh van
cau thuoc » cay thuoc, cao thuoc, cuu thuoc
thuoc ban » thuoc tan, thuoc dang, thu ban
hanh dao » lanh dao, doanh dao, hanh duoc
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
y nang » ky nang, ly nang, v nang
va cau » van cau, va cac, va dau
ma hoi » mai hoi, xa hoi, ma hoa
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang ma hoi. hieu va cau thuoc ban ((((hanh dao) or (thanh dat))) or (thanh dam)) cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ma hoi. hieu va cau thuoc ban ((((hanh dao) OR (thanh dat))) OR (thanh dam)) cua tu.
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoi. hieu va cau thuoc ban ((((hanh dao) or (thanh dat))) or (thanh dam)) cua tu*.