Perhaps you should try some spelling variations:
thien van » thi van
hieu van » hieu va, lieu va, hieu ve
hanh doi » thanh doi, hanh noi, hang doi
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
doi cua » dai cua, hoi cua
tuc va » thuc va, truc va, tuc xa
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: te sach ky nang xa hoi. ((hieu van) or (thien van)) cau ((duc va) or (tuc va)) hanh doi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. ((hieu van) OR (thien van)) cau ((duc va) OR (tuc va)) hanh doi cua tu.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. ((hieu van) or (thien van)) cau ((duc va) or (tuc va)) hanh doi cua tu*.