Perhaps you should try some spelling variations:
thanh de » hanh de, thanh ve, thanh do
thanh le » thinh le, thanh ve, thanh liem
te sach » toc sach
cam luc » cam xuc, cau luc
luc van » luoc van, luu van, duc van
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
y nang » ky nang, ly nang, may nang
ma hoi » mai hoi, xa hoi, ma hoa
v nang » va nang, vu nang, van nang
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: te sach ((y nang) OR (v nang)) ma hoi. hieu ve cam luc van ((thanh le) or (thanh de)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (v nang)) ma hoi. hieu ve cam luc van ((thanh le) OR (thanh de)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) OR (v nang)) ma hoi. hieu ve cam luc van ((thanh le) or (thanh de)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) OR (v nang)) ma hoi. hieu ve cam luc van ((thanh le) or (thanh de)) cua tre*.