Perhaps you should try some spelling variations:
phat hien » phat trien
thanh ly » thanh lay, thanh ky, thanh le
va thanh » gia thanh, ban thanh, va tinh
sach ty » sach y, sach tu, sach thu
ly phat » ly chat, ly phan, ly nhat
vu sach » vu bach, su sach, vu khach
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
ve cham » va cham, ve chat, vu cham
ve cam » ve cac, ve cai, ve cau
va cam » va cham, va cac, va cao
luc va » duc va, tuc va, loc va
ma hoi » mai hoi, xa hoi, ma hoa

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 ma hoi. hieu ((((ve cam) or (ve cham))) or (va cam)) luc va thanh ly phat hien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty nang ma hoi. hieu ((((ve cam) OR (ve cham))) OR (va cam)) luc va thanh ly phat hien.
• Adding a wildcard symbol may retrieve word variants: vu sach ty nang ma hoi. hieu ((((ve cam) or (ve cham))) or (va cam)) luc va thanh ly phat hien*.