Perhaps you should try some spelling variations:
nang cac » nang cao, bang cac, hang cac
cac khoi » cac thoi, cac khoan, cach thoi
phat duc » pham duc, phan duc, phan duoc
ban hanh » ban hang
cau tren » dau tren, ca tren, cau treo
te sach » toc sach
hieu va » lieu va, hieu qua
duc ban » duc tan, duc van, dua ban
hanh de » hanh ve, hanh kem
cu tren » tu tren, dua tren
y nang » ky nang, ly nang, v nang

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 cac khoi. hieu va phat duc ban hanh de ((cau tren) or (cu tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang cac khoi. hieu va phat duc ban hanh de ((cau tren) OR (cu tren)).
• Adding a wildcard symbol may retrieve word variants: te sach y nang cac khoi. hieu va phat duc ban hanh de ((cau tren) or (cu tren))*.