Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
thuc dan » thuc hanh, hoc dan, thuc vat
dan hanh » dang hanh, dan khanh, dan thanh
thai cua » than cua, tai cuc, tri cua
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va, hieu van
vai cua » hai cua, lai cua, bai cua
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ve nam » he nam, va nam, le nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky tang xa hoi. hieu ve nam thuc dan hanh ((vai cua) or (((thai cua) or (dai cua)))) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky tang xa hoi. hieu ve nam thuc dan hanh ((vai cua) OR (((thai cua) OR (dai cua)))) tre.
• Adding a wildcard symbol may retrieve word variants: te sac ky tang xa hoi. hieu ve nam thuc dan hanh ((vai cua) or (((thai cua) or (dai cua)))) tre*.