Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
nhanh hai » nhanh thai, thanh hai, nhanh ha
va nhanh » va thanh, va hanh, va nhan
tin mang » tin nang, ninh mang, tien manh
hai cua » thai cua, dai cua, hoi cua
cham lo » cham o, cam lo, cham soc
hieu ve » hieu va, hieu van
may hoi » may thoi, tay hoi, mai hoi
ty mang » ty xang, ty hang, tri mang
cua tre » cua te, cuu tre, cua triet
nam lo » nam bo, nam so, nam co

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ((ty mang) or (tin mang)) may hoi. hieu ve ((cham lo) or (nam lo)) va nhanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ((ty mang) OR (tin mang)) may hoi. hieu ve ((cham lo) OR (nam lo)) va nhanh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: thuat sach ((ty mang) or (tin mang)) may hoi. hieu ve ((cham lo) or (nam lo)) va nhanh hai cua tre*.