Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hien bach » vien bach, hien hanh, dien sach
thuoc va » thuc va, thuoc ma, thuong va
tuoc va » nuoc va, duoc va, tuc va
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
dan di » danh di, dan da, dan de
di cua » dai cua, doi cua, de cua
cua tu » cua tuc, cua su, cua cu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky nang xa hoi. hieu ((hien bach) or (thien hach)) ((tuoc va) OR (thuoc va)) dan di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang xa hoi. hieu ((hien bach) OR (thien hach)) ((tuoc va) OR (thuoc va)) dan di cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang xa hoi. hieu ((hien bach) or (thien hach)) ((tuoc va) OR (thuoc va)) dan di cua tu*".