Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
lang van » dang van, tang van, hoang van
hieu va » lieu va, hieu qua
va cham » va chat, va tham
sach ky » sach y, sach ty, sach kem
van hoi » van hoa, van hoc, van hoe
sac ky » cac ky, sai ky
xuc va » tuc va, luc va, xac va
cua su » qua 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 ky) or (sac ky)) lang van hoi. hieu va cham ((xuc va) or (duc va)) hanh dai cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sac ky)) lang van hoi. hieu va cham ((xuc va) OR (duc va)) hanh dai cua su.
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) or (sac ky)) lang van hoi. hieu va cham ((xuc va) or (duc va)) hanh dai cua su*.