Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
va thanh » gia thanh, ban thanh, va tinh
nang cai » nang cao, nang tai, nang cap
su sach » so sach
ve cham » va cham, ve chat, vu cham
tai cuu » tai cuc, tai buu, tai cua
truc va » thuc va, thuc vat, trung va
cuu tre » cua tre, cau tren, cau treo
cai hoi » cau hoi, dai hoi, cai hoa
vu sach » vu bach, vu khach
ve cam » ve cac, va cam, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (vu sach)) ky nang cai hoi. hieu ((ve cam) or (ve cham)) truc va thanh tai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky nang cai hoi. hieu ((ve cam) OR (ve cham)) truc va thanh tai cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ky nang cai hoi. hieu ((ve cam) or (ve cham)) truc va thanh tai cuu tre*.