Perhaps you should try some spelling variations:
thanh di » thanh doi, thanh do, thanh dinh
thanh de » hanh de, thanh ve, thanh do
te sach » toc sach
cam luc » cam xuc, cau luc
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao
luc va » duc va, tuc va, loc va
sach v » sach va, sach y, sach 2
ma hoi » mai hoi, xa hoi, me hoi
v nang » va nang, vu nang, van nang
cua te » cua tu

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 v nang ((ma hoi) OR (ma hoa)). hieu va cam luc va ((thanh di) or (thanh de)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang ((ma hoi) OR (ma hoa)). hieu va cam luc va ((thanh di) OR (thanh de)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v nang ((ma hoi) OR (ma hoa)). hieu va cam luc va ((thanh di) or (thanh de)) cua te".
• Adding a wildcard symbol may retrieve word variants: te sach v nang ((ma hoi) OR (ma hoa)). hieu va cam luc va ((thanh di) or (thanh de)) cua te*.