Perhaps you should try some spelling variations:
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
thuc va » thuc vat, thuc dan, thuc day
su tien » su kien, su hien, tu tieng
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
tuc va » truc va, tuc xa, duc va
dao vi » dao voi, dao ve, dao va
vi su » va su, ve su, ki su

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 ma hoi. hieu ve chat ((tuc va) or (thuc va)) dao vi su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ma hoi. hieu ve chat ((tuc va) OR (thuc va)) dao vi su tien.
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoi. hieu ve chat ((tuc va) or (thuc va)) dao vi su tien*.