Perhaps you should try some spelling variations:
danh tai » dinh tai, hanh tai, anh tai
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
cuc tre » duc tre, cua tre, cuu tre
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
ve cam » ve cham, ve cac, va cam
tuc va » thuc va, truc va, tuc xa

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 ((y nang) or (v nang)) xa hoi. hieu ve cam tuc va ((danh tai) OR (doanh tai)) cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (v nang)) xa hoi. hieu ve cam tuc va ((danh tai) OR (doanh tai)) cuc tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y nang) or (v nang)) xa hoi. hieu ve cam tuc va ((danh tai) OR (doanh tai)) cuc tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (v nang)) xa hoi. hieu ve cam tuc va ((danh tai) OR (doanh tai)) cuc tre*.