Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
dung hai » dung tai, dung ha, dung sai
hai cua » thai cua, dai cua, hoi cua
tu bach » vu bach, tu cach, tu hach
ky dang » ky nang, ky danh
dang ha » dong ha, dung ha, lang ha
hieu va » lieu va, hieu qua
va dung » van dung, va duong, vat dung
cam tuc » cam xuc, cam tu, dam thuc
tu bac » tu ban, tu cac, tu bat
ha hoi » hoa hoi, ha noi, xa hoi
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu bac) or (tu bach)) ky dang ha hoi. hieu va ((cam tuc) or (nam thuc)) va dung hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu bac) OR (tu bach)) ky dang ha hoi. hieu va ((cam tuc) OR (nam thuc)) va dung hai cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu bac) or (tu bach)) ky dang ha hoi. hieu va ((cam tuc) or (nam thuc)) va dung hai cua te*.