Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
va thanh » gia thanh, ban thanh, le thanh
tu sach » thu sach, su sach, te sach
cau tuc » cau truc, cau tu, cau luc
va tinh » may tinh
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
ho cua » hoc cua, hoi cua, hoa cua
va cau » van cau, va cac, va dau

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 (thuat lanh)) ky nang ma hoi. hieu va cau tuc ((va thanh) OR (va tinh)) ho cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat lanh)) ky nang ma hoi. hieu va cau tuc ((va thanh) OR (va tinh)) ho cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thuat lanh)) ky nang ma hoi. hieu va cau tuc ((va thanh) OR (va tinh)) ho cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat lanh)) ky nang ma hoi. hieu va cau tuc ((va thanh) OR (va tinh)) ho cua tre*.