Perhaps you should try some spelling variations:
chua tre » chua tri, cua tre, chua trieu
va chua » vua chua, ca chua, va chu
hanh va » hang va, hanh vi
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ty nang » ky nang, ty xang, ty hang
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
ve cam » ve cham, ve cac, va cam

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