Perhaps you should try some spelling variations:
lang mai » lang dai, lang hai, lang man
ban hanh » ban hang
nang tai » hang tai, tang tai, sang tai
hieu van » hieu va, thien van, lieu va
phu san » phi san, thuy san
cam duc » cam xuc, cao duc, pham duc
va danh » va dinh, va dan, va hanh
van cam » van nam, van lam, van cau
cua tre » cua te, cuu tre, cua triet
san ky » sang ky, van ky, dan ky
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: phu san ky ((lang mai) or (nang tai)) hoi. hieu van cam duc ((ban hanh) or (va danh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: phu san ky ((lang mai) OR (nang tai)) hoi. hieu van cam duc ((ban hanh) OR (va danh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: phu san ky ((lang mai) or (nang tai)) hoi. hieu van cam duc ((ban hanh) or (va danh)) vi cua tre*.