Perhaps you should try some spelling variations:
thien quan » trien quang, lien quan, thien van
quan nam » quang nam, xuan nam, quan am
nam thuc » nam thuoc, am thuc, nam thu
thuc dan » thuc hanh, hoc dan, thuc vat
dan hanh » dang hanh, dan khanh, dan thanh
cau tren » cu tren, dau tren, ca tren
nang co » nang cao, nang doc, nang noi
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
nang o » nang ho, nang ro, nang x
vi cau » va cau, ve cau, di cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky ((nang o) or (nang co)) hoi. thien quan nam thuc dan hanh vi cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky ((nang o) OR (nang co)) hoi. thien quan nam thuc dan hanh vi cau tren.
• Adding a wildcard symbol may retrieve word variants: tu sai ky ((nang o) or (nang co)) hoi. thien quan nam thuc dan hanh vi cau tren*.