Perhaps you should try some spelling variations:
tinh thai » sinh thai, tinh toan, tinh chat
tinh hai » tinh chat, trinh han, thanh hai
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
cac duc » cac du, cao duc, cac dac
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
ve cac » va cac, vien 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 y nang ma hoi. hieu ve cac duc va ((tinh hai) OR (tinh thai)) cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ma hoi. hieu ve cac duc va ((tinh hai) OR (tinh thai)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoi. hieu ve cac duc va ((tinh hai) OR (tinh thai)) cuu tre*.