Perhaps you should try some spelling variations:
hiep hoat » hiep hoa, hieu hoat, thien hoat
hoat nam » hoai nam, hoa nam, hoang nam
ban hanh » ban hang
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nam qua » nam quan, nam cua, nam mua
va hanh » van hanh, va danh, dao hanh
cuu tre » cua tre, cau tren, cau treo
vi cuu » vi luu, vinh cuu
x hoi » xa hoi, o hoi, x ho

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 ky nang x hoi. hiep hoat nam qua ((((va hanh) or (ban hanh))) or (va thanh)) vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hiep hoat nam qua ((((va hanh) OR (ban hanh))) OR (va thanh)) vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. hiep hoat nam qua ((((va hanh) or (ban hanh))) or (va thanh)) vi cuu tre*.