Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
tang mai » tang ma, tang tai, lang mai
vien cac » vien bach, vien dai, vien da
te sach » toc sach
hanh ca » hanh cac, hanh cat, hanh cua
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
mai hoi » mai khoi, dai hoi, lai hoi
ky tang » ky nang, ky dang, kho tang
tuc va » thuc va, truc va, tuc xa
ca cua » co cua
ve cac » va cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (thuat lanh)) ky tang mai hoi. hieu ((ve cac) or (vien cac)) tuc va hanh ca cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuat lanh)) ky tang mai hoi. hieu ((ve cac) OR (vien cac)) tuc va hanh ca cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuat lanh)) ky tang mai hoi. hieu ((ve cac) or (vien cac)) tuc va hanh ca cua tre*.