Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
hieu van » hieu va, thien van, lieu va
hanh doi » thanh doi, hanh noi, hang doi
cham tuc » nham thuc, pham thuc, cham soc
doi cuu » doi cua, doi cuoc
va hanh » van hanh, va thanh, va danh
te sach » toc sach
sach ly » sach y, sach lo, sach ty
mai hoi » mai khoi, dai hoi, lai hoi
ly nang » ky nang, ly hang, ly vang
cuu tre » cua tre, cau tren, cau treo
ma hoi » xa hoi, ma hoa, me hoi

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 ly nang ((ma hoi) or (mai hoi)). hieu van ((cham tuc) or (tham thuc)) va hanh doi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang ((ma hoi) OR (mai hoi)). hieu van ((cham tuc) OR (tham thuc)) va hanh doi cuu tre.
• Adding a wildcard symbol may retrieve word variants: te sach ly nang ((ma hoi) or (mai hoi)). hieu van ((cham tuc) or (tham thuc)) va hanh doi cuu tre*.