Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
hieu sau » hieu su, hieu suat, tieu su
thai cua » than cua, tai cuc, tri cua
tang lai » trang lai, tang tai, tang loi
sau chat » sat chat, sau chan, soat chat
tu sach » thu sach, te sach, tu cach
lai hoi » dai hoi, lai hoa, lai roi
ky tang » ky nang, ky dang, kho tang
su sach » so sach, vu sach
xuc va » tuc va, luc va, xac va
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: ((tu sach) OR (su sach)) ky tang lai hoi. hieu sau chat ((xuc va) or (duc va)) hanh thai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky tang lai hoi. hieu sau chat ((xuc va) OR (duc va)) hanh thai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ky tang lai hoi. hieu sau chat ((xuc va) or (duc va)) hanh thai cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) ky tang lai hoi. hieu sau chat ((xuc va) or (duc va)) hanh thai cua te*.