Perhaps you should try some spelling variations:
trinh vat » trinh van, trinh luat, sinh vat
dan trinh » dan tinh, van trinh, hanh trinh
vien cac » vien bach, vien dai, vien da
tu sach » thu sach, su sach, te sach
vat cua » mat cua, bat cua, dat cua
xuc dan » tuc dan, duc dan, xuc ban
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
hoc anh » hoc nganh, hoc nhanh, ngoc anh
ma hoi » mai hoi, xa hoi, ma hoa
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: ((tu sach) or (hoc anh)) ky nang ma hoi. hieu ((ve cac) or (vien cac)) xuc dan trinh vat cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (hoc anh)) ky nang ma hoi. hieu ((ve cac) OR (vien cac)) xuc dan trinh vat cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (hoc anh)) ky nang ma hoi. hieu ((ve cac) or (vien cac)) xuc dan trinh vat cua tre*.