Perhaps you should try some spelling variations:
thieu nien » thien nhien
phan dang » phan dau, phan cong, nhan dan
nhan dang » nhan dan, tran dang
nien cac » vien cac, dien cac, bien cac
tu sach » thu sach, su sach, te sach
cac luc » cau luc, coc luc, cac nuoc
sach ty » sach y, sach tu, sach thu
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
cu tren » tu tren, dua tren
ma hoi » mai hoi, xa hoi, ma hoa
va cu » va cau, va chu, va su

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 ty nang ma hoi. thieu nien cac luc ((nhan dang) OR (phan dang)) va cu tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang ma hoi. thieu nien cac luc ((nhan dang) OR (phan dang)) va cu tren".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ma hoi. thieu nien cac luc ((nhan dang) OR (phan dang)) va cu tren*.